Pay attention to the suitability of choosing ppe Pay attention to the suitability of choosing ppe .

Pay attention to the suitability of choosing ppe

The princely family danced brightly underwear romantic style

A collection of romantic Paris, France, the prince brand of family underwear with a unique charm to light, stay in this ancient Eastern countries, the prince brand underwear like flying in the garden Nabi, brilliant colors and elegant dance Let women bloom more charming luster.

皇子家族

Prince of the family underwear brand is the Italian Prince brand marketing center's underwear brand, a high level of design, are from the hands of famous Italian designers. Prince of the family brand underwear for domestic certain quality of life and insights, the pursuit of personality, ***y, mature, elegant women tailored.

皇子家族翩然而至 舞出内衣浪漫风情

Prince brand underwear brand outstanding, unique distinctive store style, rich in deep cultural connotation of products; standard and high standards of channel and terminal management operations and scientific logistics and distribution system in the country to franchise expansion of brand marketing Means, depending on the franchisee as "the water of life," so in peer companies formed a unique brand management culture.

Classic Sunglasses

Classic sunglasses are never outdated. They have become the necessary tools for everyday modeling. They are suitable for all people to wear and wear. The classic is eternity. It is good for the inside and outside. In fashion, it has a few nostalgia for you. The mirror surface is smooth and neat, the exquisite craft coloring is uniform, unparalleled perfect texture. Comfortable vision, and at the same time create additional sense of avant-garde, walking on the road, you are the focus.

Classic Sunglasses,Classic Eyewear,Fashion Classic Sunglasses,Custom Classic Sunglasses

China Guangdong Shenzhen city Omelle glasses Co., Ltd. , https://www.omelleoptical.com


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Anxi County, Quanzhou City, Fujian Province Huatou Zhongshan Street Zhuoya beauty underwear franchise opened

Warm congratulations to Quanzhou, Fujian Anxi County, Lake Town, Zhongshan Street Zhuoya Jia man underwear joining the shop May 1 grand opening!
ZHUO TOWN is located in Zhongshan Street, Hutou Town, Anxi County, Quanzhou City, Fujian Province. It is located in the Golden Triangle of Minnan and is located in the northwest of Anxi County. It is a central town in the north of Anxi County. Long, old times, profound cultural background, known as "Xiao Quanzhou", has always been the traffic Anxi New Zealand and commerce and trade. 130 kilometers away from the Xiamen Special Economic Zone, 90 kilometers away from the Greater Quanzhou Economic Zone, convenient docking docking, receiving radiation. Town area of ​​101.2 square kilometers, surrounded by mountains, the middle flat, is the valley of the valley, usually less than 150 meters above sea level. The town exempted 29 villages, 3 community neighborhood committees, resident population of more than 80,000 people, floating population of more than 10,000 people. Hu Tau town social stability, economic and social undertakings stable and rapid development. In 2005 and 2006, it was successively rated as one of "100 Top Towns and Townships in Fujian Province" and was named as "Civilized Village and Township of Fujian Province in 2003-2005" and "Provincial Standard Unit." Zhuoya Jianei Underwear Hotline:

卓娅佳人


(Zhuoya beauty Zhongshan store in Fujian Province)

With the tide of globalization, the close demand of Chinese women is fully awake, and the underwear is in the trend of fashion and health. Underwear is no longer just the cover of the shading cloth, but to show charm, charming, ***y weapon, women's underwear, interior consumption and therefore entered a period of rapid growth. Underwear stores are also springing up, shining in the jungle of the city, Zhuoya beauty Zhongshan underwear in the bustling commercial street, like a peerless Allure Woman, elegant presentation is her own charm.

Recommended reading: 1. Chongqing Mulligan underwear franchise opened on May 28 2. Leshan Han Park underwear franchise opened on May 25 3. Shenzhen Bursa underwear franchise opened on May 26

Round  Optical Glasses

Round frames glasses have been well known in literature, sweetness, hip-hop and other styles. The round frame has a literary and artistic style. This frame type spectacle frame has always been a classic in spectacles, and at the same time, it is fashionable. Simple texture with your own style, a comfortable woolen glasses, circular fashion optics, fashion and circular collision, redefine the beauty of the circle. Material is an attitude. The legs are strong and the legs are firm. Flexible material to adjust the width of the interior to adapt to a variety of face types, the use of high-quality screw connection, smooth polishing, mirror legs open and close smoothly. Not every pair of glasses is so fresh and more suitable for you.

 


Round Optical Glasses,Mens Round Eyeglass Frames,Small Round Eyeglass Frames,Circle Eyeglass Frames

China Guangdong Shenzhen city Omelle glasses Co., Ltd. , https://www.omelleoptical.com


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Denim shirt with denim s******t looks good? Denim shirt with what denim s******t was thin

Autumn wind bleak, to wear the long sleeve season. Believe that in most of the mushroom season in this season are indispensable to a shirt, denim shirts in the shirt is undeniable wild holy goods, can be sweet and handsome and charming. So long-sleeved denim shirt with a cowboy s******t look good? What kind of denim s******t was thin? Below with Xiaobian take a look!

TITI

Slim models of this lady long-sleeved denim shirt, cool fabric into the personality of embroidery and graphic design, with many feminine Tanabata. With the fringed dress s******t s******t, personality and ultimately female charm, but with a little publicity flavor, very charming Oh!

牛仔衬衫搭配牛仔裙好看吗?牛仔衬衫搭配什么牛仔裙显瘦

Simple this long-sleeved denim shirt, dark processing, coupled with self-cultivation version, simple and without losing the details of the small design, people have to love, elegant and resistant to look. With the same color denim long s******t, cover the meat was thin, but any body and style of sister paper can easily control.

Photo credit: TITI Womenswear

Rigid PCB

Rigid PCB, the largest number of PCB manufactured 


What is Rigid PCB - Rigid PCB Definition 


Rigid PCB is a kind of printed circuit board, and is the largest number of PCB manufactured. It is made of solid substrate material, which can effectively prevent the distortion of the circuit board. Perhaps the most common rigid circuit board is the computer motherboard. The motherboard is a multi-layer PCB designed to distribute power from the power supply while allowing communication between all components of the computer, such as CPU, GPU and RAM.


Rigid PCB can be used in any position where the PCB itself needs to be set to a shape and maintained during the remaining life of the equipment. Rigid PCBs can be anything from simple single-layer PCBs to eight or ten-layer multi-layer PCBs.


Rigid PCB and  Flexible PCB  are totally different. One is flexible and the other is rigid. Therefore, their application scenarios are different. In addition, there are rigid-flex PCB. There are similarities between them. However, all rigid PCB have single-layer, double-layer or multi-layer structure, so they have common application scope. This is the case. 

 

WHAT IS RIGID PCB 




Some characteristics of rigid PCB 


  • Rigid PCB is a kind of conventional PCB, which can not be like flexible PCB, because rigid PCB can not be twisted or folded into any shape, because it has FR4 reinforcement, which is very useful for increasing stiffness. 


  • Rigid PCB is made up of copper trances and paths which are incorporated on a single board in order to connect the different components on the board. The base material of the board is made of rigid substrate which gives rigidity and strength to the board. 


  • The computer motherboard is the best example of a rigid PCB with a rigid substrate material. 


 

  • Once rigid PCBs are manufactured, they cannot be modified or folded into any other shape. 


 

  • Rigid PCB is cheaper than flexible PCB. They are traditional PCBs and are widely used in many electronic products. 

 


 

  • Flexible PCB and rigid PCB have their own limitations and advantages in terms of ease of use and availability. Both of them are used to connect multiple electronic components on circuit boards. 




Rigid PCB manufacturing 


Rigid PCB is made up of different layers that are joined together using adhesive and heat, providing a solid shape to board material. Following layers are used to develop a rigid PCB.


Substrate Layer - rigid PCB material 


  • Substrate layer, also referred base material, is made of fiber glass. 

 


 

  • The FR4 is mostly used as a substrate material which a most common fiber glass that provides rigidity and stiffness to the board. 

 


 

  • Phenilcs and epoxies are also used as a base material but they are not as good as FR4, however, they are less expensive and feature unique bad smell. 

 


 

  • Decomposition temperature of phenolics is too low that results in delamination of the layer if solder is placed for long duration of time. 

 

Rigid PCB structure | RIGID PCB MANUFACTURING 

Multilayer Rigid PCB Stackup 

Multilayer Rigid PCB Stackup


Copper Layer 


  • On the top of substrate layer, there resides a copper foil which is laminated on the board with the help of added amount heat and adhesive. 

 


 

  • In common use, both sides of the board are laminated with copper, however, some cheap electronics come with only one layer of copper material on the board. 

 


 

  • Different boards come with different thickness which is described in ounces per square foot. 


Solder Mask Layer 


  • Solder Mask Layer houses above the copper layer. 

 


 

  • This layer is added on the board to add insulation on the copper layer in order to avoid any damage in case any conduction material is touched with the copper layer. 


Silkscreen Layer 


  • Silkscreen layer is located above solder mask layer. 

 


 

  • It is used to add characters or symbol on the board that provide better understanding of the board. 

 


 

  • White color is mostly used for silkscreen however, other colors are also available including grey, red black and yellow. 


RIGID PCB VS FLEXIBLE PCB 




The differences between Rigid PCB And Flexible PCB 


  • Most of the electronics made use of traditional rigid PCB. However, technology has been evolved and many products abandoned rigid PCBs because of their inability to get folded or twisted. This has erupted the idea of flexible PCB and soon it became the prerequisite for most of the professionals in the market. 


  • Manufacturing process of both rigid and flexible PCBs is same with some exceptions in terms of their flexibility, softness and غير مجاز مي باشدt. 


  • Some extra measures are required for processing flex PCB when it comes to material handling. Also proper specifications are required in order to avoid any cracked solder joints when the board is bent. 


  • Flexible PCBs are most غير مجاز مي باشدtly than rigid PCBs, however, we are referring here individual غير مجاز مي باشدt of the flexible PCB, it may happen the overall غير مجاز مي باشدt of the project using rigid PCB is higher than the غير مجاز مي باشدt of the flexible PCB, but individual غير مجاز مي باشدt of flexible PCB will be higher. 


  • Many cheap electronics make use of rigid PCBs including audio keyboards, desktop devices, solid state drives, toys and many electronic gadgets. However, flex circuits are observed in ultra high performance device because they don`t involve connectors also thinner than rigid boards and can be used in smart phones, cameras, tablets and GPS control system. 


  • Both rigid and flexible boards can be incorporated together to construct a unified product that comes with both strength and flexibility. 


  • Some flex PCBs follow the same design as rigid circuit design but they are not completely identical to the rigid circuit boards. 


  • Flexible PCBs provide flexible and bending solutions and they also require less space and are mostly Single-Sided PCB. 




When to Use Rigid and When to Use Flexible 


  • Rigid PCBs typically غير مجاز مي باشدt less than flex circuits. I say "typically" because when considering the total غير مجاز مي باشدt of ownership there are some applications that, when using flexible PCBs, may be less expensive compared to using rigid PCBs. To get a true and accurate understanding of the total غير مجاز مي باشدt of ownership, you first need to appreciate the fact that flex circuits may eliminate the need for components such as connectors, wire harnesses, and other circuit boards. By removing these components from a design, material غير مجاز مي باشدt, labor and assembly غير مجاز مي باشدt, and scrap غير مجاز مي باشدt are all reduced. 


  • Many electronic devices (laptop and desktop computers, audio keyboards, solid-state drives (SSDs), flat-screen TVs and monitors, children`s toys, and various electronic gadgets) employ rigid PCBs instead of flexible PCBs. However, flex circuits may be found in ultra-compact and/or high-performance devices, including GPS units, tablets, smart phones, cameras, and wearables. 


  • Greater sophistication is not the only reason to use flex circuits; low-tech applications,such as LED lights, may utilize flex circuit technology, in some cases because it makes installation much easier. 




Rigid PCB Applications 


  • A computer motherboard is a perfect example of rigid PCB which is a Multilayer Rigid PCB, used to distribute electricity from power supply, and creates a conducting path between CPU, GPU and RAM. 


  • Rigid PCBs are manufactured in volumes and once they are designed, they can not be altered or modified and remain same throughout the entire life span of the project on which they are placed. 


  • Some low غير مجاز مي باشدt products make use rigid PCBs like toys, ,electronics gadgets, desktop devices and solid state devices. 


  • You should also have a look at Double-Sided PCB, these are also Rigid PCBs. 




Rigid Printed Circuit Board Manufacturer: Guaranteed Quick Delivery 


JHYPCB is committed to providing the highest quality rigid printed circuit boards at competitive prices. As the name suggests, these PCBs use an inflexible, solid, and rigid substrate material such as fiberglass, which prohibits these boards from bending. We can provide high-quality, and performance-oriented rigid printed circuit boards in diverse specifications.




Different Types of Rigid PCB Provided by JHY PCB 


  • Single Sided PCB: These rigid printed circuit boards feature metal trace on single side of the dielectric. Single-sided rigid PCBs are ideal for rapid productions due to their manufacturability, as well as simple design. 


  • Double Sided PCB: As the name suggests, these printed circuit boards have a layer of dielectric sandwiched between two metal layers. The double-sided rigid printed circuit boards have become an industry staple. Their applications vary from low to high temperature ranges, fine line surface mounting, solder coatings, and high copper builds. 


  • Multilayer PCB: Multi-layer rigid PCBs feature more than two conductive metal layers, which are clearly separated by equal dielectric layers. These circuit boards allow our PCB designers to create a vast range of interconnects, as well as applications. 


Learn more about JHYPCB by exploring the manufacturing capability of Rigid Printed Circuit Board below. We can do more than you can imagine.  

Item  

Manufacturing Capability  


 

PCB Layers  

1-26L (TG135 TG150 TG170 TG180)  


 

Laminate  

FR-4, FR- 406, 370 HR ,IT180A,CEM-1, CEM-3,FR1,FR2,94HB,PTFE,etc.  


 

Brand of Laminate  

Kingboard,Shengyi,Nanya,Isola,Rogers,etc.  


 

Max Board Size  

1-2layers: 1000mm * 600mm  


 

Multilayer PCB: 600* 600mm  


 

Board Thickness  

0.1-4.0 mm  


 

Board Thickness Tolerance  

±10%  


 

Copper Thickness  

1-10 oz  


 

Min Mechanical Drilling Hole Size  

4mil(0.10mm)  


 

Min Laser Drilling Hole Size  

3mil(0.075mm  


 

Min Line Width/Line Space  

2/2mil  


 

Surface Finishes  

OSP, HASL, HASL Lead-Free (HASL LF), Immersion Gold(ENIG), Immersion Silver, Immersion Tin, Plated Gold, etc.  


 


 

Solder Mask Colors  

Green, Red, White, Black, Blue, Yellow,  Orange, Purple, Gray.

Matt: Green, Blue, Black.  


 


 

Silkscreen Colors  

Black, White, Yellow.  


 

Electrical Testing  

Fixture and Flying Probe  


 

Other Testing  

AOI, X-Ray(AU&NI), Two-dimension Measurement, Hole Copper Instrument, Impedance Test, Metalloscope, Peeling Strength Tester, Solderability Test, Logic Contamination Test  


 

Special Capabilities  

Thick Copper, Thick Gold(60μ"), Gold Finger, Blind and Buried Hole, Countersink Hole, Semi-hole, Peelable Mask, Carbon Ink, Impedance control+/- 10%, etc.  


 


 

Additional information


 

Rigid PCB,Fr4 PCB,Rigid Circuit Board,Rigid Printed Circuit Board

JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com


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Han Lier brand underwear fashion to create a new concept of health

Recently, " Han Lier 5G underwear, " formally met with consumers in Shenzhen , listed at the beginning, the Korea Lier 5G underwear with its healthy fashion design concept, high-tech production level, the trend of fashion visual enjoyment by many Female consumers, single-day sales amounted to one hundred thousand yuan, the just-concluded first-time agents Merchants work victorious, so far, Han Lier 5G underwear for sale in less than two months, they will be consumers Generally accepted, rave reviews.

韩丽尔

Han Cheryl 5G popular national health underwear underwear to join the market, assembled a day, geographical factors on the one hand, with the continuous improvement of living standards, people's pursuit of quality of life levels are also rising, upgrade from fabric, غير مجاز مي باشدmetics The reform of raw materials, people urgently need to have intimate contact with the body skin underwear quality to the next level, in the healthy market demand for the upgrading of the environment, Han Lier underwear to health, anti-cancer effect, quickly captured the hearts and minds of consumers .

Han Lier 5G underwear series of anti-breast cancer underwear breasts imported from Italy sandwiches, France imports of fiber cotton (masks cotton) and other high-quality materials, and special super-fine sand and soy protein fiber combed cotton high-elastic spandex as raw material, As well as highly flexible fibers Dolastein, high-tech functional fibers + Egyptian long-staple cotton + natural plant-based eco-friendly fibers and eco-textiles with excellent breathability, soft, smooth, silky feel and excellent moisture absorption It is 50% more absorbent than cotton and softer and more comfortable to wear.

韩丽尔品牌内衣 打造时尚健康新概念

On the other hand, Han Lyle 5G health lingerie brand official said that the market is very fit fit HanLiEr 5G within the current female consumers more and more attention to the health of the breast needs and attention to the health benefits of Khan 5G health underwear at the beginning of the listing selected 2000 female consumers to try on, and received a very good wearing experience feedback, a good product is knocked on the market stepping stone, 4L Lily 5G underwear to join the market in the future The inevitable trend of development is to join the brand underwear, underwear chain vane.

Han Lier 5G underwear breast underwear series of health underwear, is a built-in steel ring, the use of sewn and seamless combination of technology, a super-conventional bra products, the steel ring placed in the mold cup, so bra In supporting, gather the breast at the same time, to the breast with the most relaxed and most comfortable experience, comfortable, more skin. Han Lier anti-breast cancer breast underwear significant health care features is greatly reduced steel card bit female chest breast pressure; improve breast space and surface stress environment, smooth the blood vessels, improve blood circulation; avoid tissue hypoxia necrosis Carcinogenesis, prevention of breast cancer.

韩丽尔品牌内衣 打造时尚健康新概念

"Responsibility and health counterparts, the coexistence of beauty and fashion" is the launch of 5L Lyric series of anti-breast cancer underwear original intention, Han Lier 5G concept breast cancer underwear brand manager said he hoped to hear more consumer expression For the wearing of 5L anti-breast cancer underwear, the company will focus on customers' personal experience and launch more health underwear that is more popular in the market.

12 Layer PCB

Cheap 12 Layers PCB stackup and thickness 

 


 

We are one of the few manufacturers in China that can manufacture 12-layer PCB boards on a large scale.


The 12-layer board can usually be manufactured smoothly on a 1.6mm thick FR-4 board. But we've seen more 14- to 16-layer boards are being fabricated into 1.6mm thick boards, but the number of manufacturers that can produce them is limited to manufacturers that can produce HDI PCB boards. Those who can produce HDI Circuit boards are increasing. 

12 Layers PCB– Heavy industry boards or boards with may tracks 

For industrial PC design, 12-layer circuit boards are more popular. Compared with other multi-layer PCB circuit boards, such as four-layer circuit boards, 8-layer circuit boards, 10-layer circuit boards, The price of the 12-layer PCB is still reasonable. 



12 Layer PCB

 



12 layer PCB stackup and thickness 


12 Layer PCB Stack Up 

Top Layer  ‐ 18um Copper Foil (plated to 35um+) 

Pre‐Preg   ‐ 1 x 2116 

Layer 2 & 3  ‐ 0.13mm Fr‐4 Core with 35um/35um Copper 

Pre‐Preg   ‐ 1 x 2116 

Layer 4 & 5  ‐ 0.13mm Fr‐4 Core with 35um/35um Copper 

Pre‐Preg   ‐ 1 x 2116 

Layer 6 & 7  ‐ 0.13mm Fr‐4 Core with 35um/35um Copper 

Pre‐Preg   ‐ 1 x 2116 

Layer 8 & 9  ‐ 0.13mm Fr‐4 Core with 35um/35um Copper 

Pre‐Preg   ‐ 1 x 2116 

Layer 10 & 11  ‐ 0.13mm Fr‐4 Core with 35um/35um Copper 

Pre‐Preg   ‐ 1 x 2116 

Bottom Layer   ‐ 18um Copper Foil (plated to 35um+) 

Stardand 12 Layer PCB  1.6mm +/‐ 10% 


 

12 Layer PCB Stack UP | JHYPCB

 


12 layer stackup – 4 GNDs 

I use this stackup a lot, provides GND shielding of high speed signals and has tightly coupled Power-Ground planes: 


 

Signal / Solid GND plane / High speed signals and important buses / Solid GND plane / Power / Power or Mixed with signals / Power or Mixed with signals / Power / Solid GND plane / High speed signals and important buses / Solid GND plane / Signal 


12 layer stackup – two additional signal layers 

Signal / Solid GND plane / Signal / Signal / Solid Power Plane / Power or Mixed with signals / Power or Mixed with signals / Solid Power Plane / Signal / Signal / Solid GND plane / Signal 


 



12 layer PCB stackup thickness 


12 layer PCB stackup thickness 


12 Layer PCB 




12 layer PCB Features and benefits 


  • Lead-free surface finish and lead-free components 

  • Long storage time (vacuum and anti-static packaging) 

  • Improved the speed of signal transmission 

  • Fast on time delivery 

  • UL certified and RoHS compliant 

  • Prototype PCB manufacturing 



12 layer PCB Application 


DSL Modem, Solar Battery Charger, Vehicle Tracker, GPS Receiver, Wi Fi Antenna, Bluetooth USB Hub, USB Wireless Router, SMS Modem, Multicoupler Antenna, Phone systems.

Printed Wiring Board,Custom Printed Circuit Board,12 Layer PCB,Custom 12 Layer PCB

JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com


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South Korea's SK Hynix requires 33.4% of the voting rights to cause Toshiba to sign a contract

[Global Technology Reporter Wang Huan] According to a report by the Japanese Kyodo News Agency on July 4th, Toshiba’s sales of Toshiba Memory (Tokyo), a semiconductor subsidiary company, will be the first to negotiate industrial innovation organizations such as Japan, the United States, and South Korea. Semiconductor giant SK Hynix demanded a maximum of 33.4% of the voting rights. Toshiba worried that competitive companies would participate in or cause long-term review of the Anti-Monopoly Law in the form of capital injections rather than loans originally planned, and signing contracts would be in trouble.

Data map

The U.S. Western Digital (WD), which co-operated with Toshiba’s factory in Yokkaichi City, Mie Prefecture, has filed a lawsuit with the US court to stop the sale and plans to begin interrogation on the 14th. Toshiba said on the 3rd that it has submitted a report that rejects Western Digital’s claim, but Western Digital will definitely step up the confrontation with strong fears of outflow of technology to SK.

The U.S., South Korea, and Commonwealth consortium initiated priority negotiations on June 23, with the reform agency and Japan’s policy investment bank holding 66.6% of the voting rights together. The U.S. fund “Bain Capital” holds 33.4%. SK hynix, which is in a competitive relationship with Toshiba, did not appear on the list of capital injection companies. Instead, it took part in the acquisition plan in the form of loans to Bain. Toshiba President A******a Tomikawa pointed out: "SK has no voting rights and can prevent the outflow of technology. ”

However, according to related sources, during the consultation process, SK asked to ensure that it has the right to obtain some or all of the voting rights from Bain. 33.4% of the voting rights will be able to exercise veto power over important proposals.

The chairman of the innovation agency Shi Hejun expressed to the media on June 30 that he would “not stop because of a problem”. However, when will he be able to sign the contract and say “currently hard to say”.

                   

4 Layer PCB

4 Layer PCB 

What is 4 layer PCB? 

Four-layer circuit board is a kind of printed circuit board. It is made of four layers of glass fibre, which can reduce the غير مجاز مي باشدt of PCB.


Compared with Double Sided PCB, multi-layer PCB have many advantages. They can be designed more compactly. They can greatly improve noise resistance and make layout easier.

 


There are also great differences between the 2-layer and 4-layer PCB. For details, please click: What's the difference between 2 layer and 4 layer PCBs? 


 



4 layer PCB stackup and thickness 


4 layers PCB stackup 


4 layer PCB stackup 


4 layer PCB stackup include two inner layers, inner layer 1 and 2, are sandwiched between the top and bottom layers. From top to bottom, the 4-layer PCB stackup like below ,The top, i.e. the signal layer (0.0014 in. width) is followed by a prepreg layer with a thickness of 0.0091 in. and dielectric constant of 4.2. The top layer is copper material. The prepreg layer is followed by inner layer 1 (0.0014 in.), referred to as the plane. A core sublayer is part of inner layer 1, which has a width of 0.037 in. This is followed by inner layer 2, which is another plane layer made with 1 oz. copper and is 0.0014 in. thick. Another prepreg sublayer constituting two sheets that are 0.0091 in. thick forms part of inner layer 2. The final layer, the bottom layer, is also 0.0014 in. thick, and is a signal layer as well. Interconnects are soldered and placed on the top and bottom layers. 


 

4-layer PCB has two stacking forms 


 

The standard 4-layer PCB stack is shown below, and GND and VCC can be switched according to the layer with more signals. 


 

The standard 4-layer PCB stack 



 

If you don't want to connect all the ground pins through the hole, there will be different stacks and wide power routing on the signal plane.


 

4-layer PCB stack another type 


For the following reasons, this may be a better stack to use a four-layer PCB: 



  • The signal layer is adjacent to the plane. The signal running on the reference plane (whose voltage is exactly at the VCC) will still return on the reference plane. 

  • Signal layers are tightly coupled to their adjacent planes. 

  • The ground surface can be used as a shield for the internal signal layer. You will get better results, so that your plane height is as low as possible. 

  • Multiple grounding layers reduce the grounding (reference plane) impedance of PCB and common mode radiation. 


When the high-speed signal changes the reference plane, there should be a nearby path for its return current to move between the two reference planes. Using two horizons, you can do this by connecting two planes directly to a single channel. For grounding and power layers, the connection must be made through capacitors, which usually require two through-holes and one capacitor. This means worse signal integrity and more circuit board occupancy. On the other hand, having a power plane can reduce the voltage drop on the power rail, thereby releasing the space on the signal layer.


PCB Board Thickness 

4 LAYER 0.8 MM STANDARD BUILD

 

4 LAYER 0.8 MM STANDARD BUILD 

4 LAYER 1.6 MM STANDARD BUILD

 

4 LAYER 1.6 MM STANDARD BUILD

 


 

0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, 2.4mm, Please contact us if your board exceeds these. 




4 layer PCB Prototype 


4-layer circuit board prototyping refers to the trial production of printed circuit boards before mass production. It is mainly used for electronic engineers to design circuits and complete PCB Layout, then to carry out small-scale trial production process to the factory, that is, proofing PCB. The production quantity of four-ply proofing generally has no specific boundaries. Generally, engineers call it proofing before product design has not been confirmed and test has been completed.


Notices for proofing of four-layer circuit boards


The precautions for the production of four-layer PCB samples generally include two groups, one is the Engineer group, the other is the PCB sample manufacturer.


As a group of engineers, the matters needing attention in proofing are as follows:


1. Choose proofing quantity carefully to control غير مجاز مي باشدt effectively.

2. Specially confirm device packaging to avoid proofing failure due to packaging errors.

3. Conduct comprehensive electrical inspection to improve the electrical performance of PCB board.

4. Make good signal integrity layout, reduce noise and improve PCB stability.


As a manufacturer of four-layer circuit boards, the precautions are as follows: 


1. Check PCB files carefully to avoid data problems.

2. Conduct process approval in an all-round way and process configuration with self-manufacturer.

3. Control production quantity, reduce غير مجاز مي باشدt and maintain quality.

4. Communicate with customers who need samples to prevent accidents in advance.

 



4 layer PCB price and غير مجاز مي باشدt 


We specialize in Quick Turn PCB services with an industry leading turnaround time as fast as 24 hours. Three low-غير مجاز مي باشدt options for a small number of PCB prototyping needs. At the same time, we also provided  Flexible PCB , Rigid-Flex PCB, Metal Core PCB, High-TG PCB,  Aluminum PCB , PCB Stencils, PCB Assembly Services and so on. Using the same high-tech equipment as our full-service PCB, it can be manufactured quickly and with virtually no limits. 


غير مجاز مي باشدt of four layer PCB is higher than double sided PCB  because of complexity of design and higher sensitivity. The better quality of signals, achieved by reducing distortion and propagation levels, is also a factor. Because of the higher levels of signal integrity and reduced interference levels, more manufacturers prefer four layer PCB.

 




4 layer PCB manufacturing 


We provide a full range of PCB functions to meet all your PCB needs. At present, we accept five PCB file formats (gerber file,.Pcb,.Pcbdoc.cam or.brd file format) for PCB manufacturing. But if you design a circuit board using Sprint-Layout software, you can send the. LAy6 file to us to manually generate the Gerber file.


JingHongyi PCB can provide you with multi-layer PCB board that meets RoHS standard. With laminated material, it can match high temperature in assembly process. It is important to remember that some lead-free assembly processes will require laminated substrates to withstand temperatures exceeding 260 degrees Celsius or 500 degrees Fahrenheit over a longer period of time. To solve this problem, we have high temperature laminates in stock, so that our customers can meet the higher temperature cycle requirements of some lead-free assembly applications.


Min. Order Quantity:  1 pcs

Material: FR-4

Finished Copper: 1oz/2oz/3oz(35μm/70μm/105μm)

Inner Layer Copper Thickness:1oz/1.5oz(35μm/50μm)

Silkscreen: White, Black, None

Surface Finishing: HASL with lead, HASL lead free, Immersion gold, Hard Gold ,OSP...

Shape: Custom Shape




100% Quality control 


When making circuit boards, and after they are finished, we will test and inspect them strictly to ensure that the product reaches 100% eligibility rate. Preferential prices and higher quality have always been our constant pursuit:


  • E-test 

  • AOI - Testing (Automatic Optical Detection) 

  • X-ray (check multi-layer registration accuracy) 

  • CCD-camera controlled drilling 

  • Impedance control 


 

4 Layer PCB

Four Layer PCB

 


Videos for 4 layer PCB design and manufacturing 

 

Printed Circuit Board,4 Layer PCB,4 Layer PCB Board,4 Layer Printed Circuit Board

JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com


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No clothes to wear then come pure

Did not wear clothes? September is up, again January 1, the girls have no fancy style it? Yes, then act now! If not, then now look at it right now, Xiao Bian recommend the most comfortable for your sister paper, the most suitable clothes it!

纯粹 - simtly

After all, our income is placed there, it is impossible to follow fashion every day! And sometimes it's the kind of clothes you bought with your will to put on another look. So the girls are still selected some suitable, durable fashion gear gear now! For example, such a paragraph is very good, bring a little ink style shirt, accompanied by a gray cotton trousers, very simple, looking very comfortable.

没衣服穿了 那么就来纯粹

Some girls will like the kind of a casual dress from the end of it, then this light blue must not miss it, looked very simple, but the details are not ignored, a whole, just very fresh. Come on a small personality belt, for you to create a woman Jiaoqiao, despite the fashion circle no matter how you turn, you will not seem low.

How about the two above? Beauty is purely inside, choose their own Oh!

(Source: Jimmy Sail)

6QT Ice Bucket

True & Bright Metal Packaging Co.,Ltd.KaiPing , https://www.tnbcan.com


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2012 winter new home service: emphasize the coexistence of comfortable and fashionable

Work is bright and beautiful, after get off work can not be the same. In recent years, more and more people attach importance to the quality of life, the brand also introduced home service, home socks and other new, emphasize the comfort but also focus on design sense, so that home wear more stylish.

2012冬季新款家居服:强调舒适时尚并存

New Year approaching, Calvin Klein Underwear launched in Taiwan in the winter a variety of couple combination products, women's home trousers in pink background, full of colorful, small love heart design capture the hearts of people; preference trend style, you can choose light pink bottom Of the pen doodle brand English alphabet totem, or choose the basic style of gray with a white Logo.

From Yohji Yamamoto, Yako Yamamoto home brand Y's for living, full of intellectual and elegant atmosphere of the city, the brand makes extensive use of natural materials, to comfort, elegant design for the concept, with clean and simple cut and detail changes, at home can wear casual and beautiful Looks like. MUJI Muji also introduced warm pajamas, home clothes and lamb wool mixed ring indoor sock and so on.

5L Ice Bucket

5L Ice Bucket: 

The 5L ice bucket is used for watering flowers in garden.

It is a garden tool and can also be used to pack fruits and vegetables

for outdoor activity.Concision, elegant, delicate and

pretty color and luster. Bring for the life experience of fashion with graceful

art style. 

Description of the 5L ice bucket: 

Name:5L ice bucket 

Spec:Φ210/Φ160×210mm 

Material: galvanized iron  

Fields of applications: bar, party, hotel, home, outdoor activity,garden  

5L Ice bucketgraceful art style



 

 

1.Are you factory ? 

Yes. A professional ice bucket and Tin Tray manufacture. 

2.Are your products the lowest prices ? 

EXW, the same quality, we are much cheaper than other suppliers. 

3.Can we customized product ? 

Yes, Tailor-made tooling for your own design is welcome. 

4.What is the transportation ? 

If small quantity, we suggest that sent by Courier, If large amount, by

shipping. 

5.If goods are damaged in transit, how to do ? 

Products are inspected strictly before shipping, if damage, they can be

replaced . 




 

5L Ice Bucket,Folding Bucket,Plastic Cooler Box Ice Bucket,Club With Custom Design

True & Bright Metal Packaging Co.,Ltd.KaiPing , https://www.tnbcan.com


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Fast Food Box Making Machine

                            Model NO.: HBJ-D

                       

   

                            Trademark: DAKIOU

                       

   

                            Transport Package: Wooden Package

                       

   

                            Specification: 2950*1320*1500mm

                       

   

                            Origin: China

                       

   

                            HS Code: 8441309000

                       

 

                   

carton box making machine prices

Product Description

It is an ideal equipment to produce paper box such like hamburger box, chips box, noodle box .etc. these boxes forming use glue.
New Type Of Hamburger packaging machinery:
It is an ideal equipment to produce paper box such like hamburger box, chips box. Fried chicken box, kids meal box, etc.
Automatic Carton Erecting Machine with firm structure, high quality, low noise and high efficiency.
It has paper feeding unit, adjusted unit, glue unit, forming unit, finished products collecting unit and also counting unit.

Technical specifications:
1. Box length L 100-450mm and angle: 5° -40°
Box width B 100-580/385mm and cardboard weight: 200G/M2-600g/ m2
Edge height H 15-200mm and corrugated paper thickness: 1.5mm

Packaging dimensions
(1) Length: 2.95M Width: 1.32M Height: 1.50M
(2) Length: 1.25M Width: 1.10M Height: 0.85M

Carton Erecting Machine(single head)
The paper box made by this machine can be used in packing of KFC and Mcdonald. S or other
Erecting Machine(single head) Hamburger Press printing machine
Carton Erecting Machine(single head)
The paper box made by this machine can be used in packing of KFC and Mcdonald s or other food

2. Work principle:
The feeder transmits the pre-printed and cut cardboard from the paper shelf to the convey chain and the sends it to the shaping mold, during the procedure, the cardboard has been glued an you can adjust the position of the gluing, the volume of gluing can be measured while in progress withour stopping word. After being glued, the cardboard will be conveyed to be shaped and collected to be auto calculated as the preconcert quantity and auto mark withouot stopping production, structure: Control unit, paper feeding unit, paper transfer unit, glue spreading unit, forming unit, collecting unit.

Machine show:
Fast Food Box Making Machine

( if have any questions or need more details, pls send email to confirm with us)

This machine with firm structure, high quality, low noise and high efficiency.

Box type:
Fast Food Box Making Machine

:It has paper feeding unit, adjusted unit, glue unit, forming unit, finished products collecting unit and also counting unit

Technical specifications

Box length

100-450mm and angle: 5°-40°

Box width

100-500mm and cardboard weight: 200g/m2-600g/ m2

Edge height

H 15-200mm and corrugated paper thickness: 1.5mm

Packaging

dimensions

3600×1500×1600mm

Weight

2.2T

Company Information

we are the company in China make the paper products machines about 20 years.

workshop:

Fast Food Box Making Machine

loading container:
Fast Food Box Making Machine

Our Services
Engineers available to service machinery overseas

1.Q:Are your company a manufacturer or trading company?

A:We are a manufacturer with ten years of exporting experience by own trading company

2.Q:Where is your factory? How can I get there?     

A:Our factory is located in wenzhou City, Zhejiang Province. It takes about one and  a half hours by train from Shanghai to our city. all of our customers can take the flight to wenzhou international airport first, and then we can send a car to pick up you.

3.Q:Can your products be customized?

   A: Almost all of our products can be customized, including the sizes, color, logo, package and so on. OEM orders are highly welcome. 

  4.Q . how's the delivery time ?
A. Usually it will take about 3-4 weeks for production,all of our machinery shall be packed well with film to be water proof, and then loading and fix in a wooden case
Fast Food Box Making Machine

                           

Round Tray

Round tray: 

The shape of the metal trays are round and square.

And we have many types of pallets, including fixed handle trays and anti-slip trays, etc. The pallets we customize for Coca Cola are of guaranteed quality, with distinctive color printing and beautiful

appearance.  

Description of the round tray: 

Name:round tray 

Material: galvanized iron, tinplate 

Spec:Φ330/Φ350×40/50mm 

Fields of applications: bar, party, hotel, home, weeding, outdoor

activity

 

fixed handle trays

 

anti-slip trays

 


 

 

1.Are you factory ? 

Yes. A professional Ice Bucket and Tin Tray manufacture. 

2.Are your products the lowest prices ? 

EXW, the same quality, we are much cheaper than other suppliers. 

3.Can we customized product ? 

Yes, Tailor-made tooling for your own design is welcome. 

4.What is the transportation ? 

If small quantity, we suggest that sent by Courier, If large amount, by

shipping. 

5.If goods are damaged in transit, how to do ? 

Products are inspected strictly before shipping, if damage, they can be

replaced . 



Round Tray,Metal Serving Tray,Round Metal Serving Tin Trays,Round Metal Tin Tray

True & Bright Metal Packaging Co.,Ltd.KaiPing , https://www.tnbcan.com


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Shasilai women's autumn lotus leaf clothes with lotus leaf shirt with how

We all have a girl's heart, who is not the little princess at home, who are young, have a rebellious period, when there is a loss, there will be a happy time, like wearing the same, it is impossible to every day So smooth, but always meet their own satisfied with the wear out.

The major markets have been fully listed autumn, the autumn weather is also a step by step approach, followed by cool, is not it should create a different kind of wear it? Shasilai women today for you to recommend several classic and has a fairy style dress.

莎斯莱思女装 - SASLAX

Recommended one: intellectual and elegant

Perhaps for the female man "intellectual elegant" word, do not want to think, is not funny? But after reading the style you will regret what they say, so classic simple single product, they certainly can hold live, black Lord Goddess or Nuwa are more like, wave point modification, long sleeve version of the sleeve Hem is decorated with lotus leaf hem decoration, such intellectual and elegant style, how can you miss.

莎斯莱思女装秋装荷叶边衣服搭配 荷叶边上衣怎么搭配

Recommended two: temperament beauty ride

There are always some girls do not like to toss themselves, then how, we can still use a simple hit you to modify the fairy-like temperament, for example, this white lace dress must worry and effort to defeat a single product. The same is the flounced sleeves, self-cultivation design, the hem is decorated flounced s******t immortal feeling is very good.

莎斯莱思女装秋装荷叶边衣服搭配 荷叶边上衣怎么搭配

Recommended three: youth by age

About women's age, never ask, especially boys This is a taboo, but girls like to ask people how you guess me, this is not self-defeating it? In the unlikely event someone says a bit more awkward than your actual age, say you're happy than youngest age.

So do not care about age things, do not be too tangled, although you have been about thirty people, but what, who is not an age, is not a figure? I do not say who knows, maybe some people think I have only 20 early, yes, that's it.

Shasilai women wearing an age-wearing, white is the color to be defeated by age, sleeves to be more stylish sense of modification, the lower body of a black s******t highlights the taste of a small woman, black and white show you how old are you How old are you? Who dares to refute? No one knows how big you are.

Shara Lai Si women dating to yourself a beautiful dress, give yourself a confident street, Sass Lai Women waiting for you to pick.

(Source: Jimmy Sail)

XB510 Asbestos Sheet

XB510 Asbestos Sheet  

Description:XB510 Asbestos Sheet is top quality Sealing Gasket materials,it is made based on long asbestos fiber with NR rubber and other chemical materials ,compression molding it in different thickness paper fashion.  


Uغير مجاز مي باشدe:XB510 Asbestos Sheet is suitable for high temperature under temperature 510 and high pressure under pressure 7.0Mpa,for water and saturated vapour,super vapour,gas inert gases transmitted in the joints of facilities and pipelines. 

 


 

 


TEMP:510℃(max)  

PRESS:7.0MPa(max)  

Dimension:

4100×1500mm; 4500 x 1500mm;2000×1500mm;  

1500×1500mm;1500×1000mm;1540x1360mm  

1270×1300mm; 3810×1300mm   

Thickness:  0.5~6.0mm  

Technical data:  

Lateral Tensile Strength/MPa        ≥     21.0  

Aging coefficient                          ≥       0.9  

Loss on ignition/%                       ≤      28.0  

Compression ratio/%                     7~17  

Recovery/%                                ≥       45  

Creep relaxation rate/%             ≤       50  

Density(g/cm3)                           1.6~2.0  


 

Product photoes:


XB510 Asbestos Sheet 

XB510 Asbestos Sheet 

Xb510 Asbestos Sheet,Asbestos Sheet,asbestos roof sheets,Asbestos Cement Sheet

HEBEI HENGDA SEALING MATERIALS CO.,LTD. , https://www.hengdasealing.com


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The latest Pei Lei underwear ***y color bra

Pei Lei underwear such as fresh green leaves on the morning dew, reflecting the bright sunshine in the morning, so buds shrouded in a beautiful halo, proud of standing on the green leaves, people feel pleased to feel its confidence. Buds in the people's impression is fragile, and even when the water are afraid of accidentally ran into and off, but look carefully, but only think of the word power, the green leaves because of being broken by the bud and leave white filaments, proudly Stand up, people feel its blooming endless strength. Buds, so humble in a green, leaving only the concept of green people, but in the blink of an eye to bring unlimited beauty and shock.

佩斯蕾

The latest Pei Lei underwear ***y color bra

最新款佩斯蕾内衣 透色性感文胸

Monica has a group of experienced professional designers and managers. Design and development of different styles and styles of products, is committed to creating Peisilei into internationally renowned brands. Monica, Guangdong company in good faith attitude, good reputation, excellent management team, a mature market channels, has been the trust and support of the majority of business friends. Guangdong Monica will continue to provide guests with constant improvement and improvement of quality products and services.

最新款佩斯蕾内衣 透色性感文胸

Peisi Lei, to bring you confidence,
Peisi Lei, proudly stand to bring the taste of life;
Peisi Lei, for you to add unlimited beauty,
Pei Lei, charming, healthy, stylish, environmentally friendly!

XB200 Asbestos Rubber Gasket

XB200 Asbestos Rubber Gasket  

Description:XB200 Asbestos Rubber Gasket is a kind of low pressure asbestos sealing materials,it made by good asbestos fiber with rubber and other chemical materials ,compression molding it in thick paper fashion. 

Uغير مجاز مي باشدe:Suitable for ordinary water caliduct equipment and low pressure.For water and steam transmitted in the joints of facilities and pipelines. 

TEMP:200℃(max) 

PRESS:1.5MPa(max) 

Dimension:

4100×1500mm; 4500 x 1500mm;2000×1500mm; 

1500×1500mm;1500×1000mm;1540x1360mm 

1270×1300mm; 3810×1300mm  

Thickness:  0.5~6.0mm 

Technical data: 

Lateral Tensile Strength/MPa        ≥ 6.0  

Aging coefficient                           ≥  0.9 

Loss on ignition/%                         ≤  30.0 

Compression ratio/%                     7~17 

Recovery/%                                   ≥  35 

Creep relaxation rate/%                ≤  50 

Density(g/cm3)                           1.6~2.0 


XB200 Asbestos Rubber Gasket 

XB200 Asbestos Rubber Gasket

 

Xb200 Asbestos Rubber Gasket,Asbestos Rubber Gasket,Red Asbestos Rubber Jointing Sheet,Asbestos Gasket Sheet

HEBEI HENGDA SEALING MATERIALS CO.,LTD. , https://www.hengdasealing.com


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