双乳被一左一右吃着的,无码人妻精品一区二区三区在线,真人高清实拍女处被破的视频,啊灬啊灬啊灬快灬高潮了女

Welcome to the official website of Shenzhen Ledfocus Precision Manufacturing Co., Ltd.!
News
Industry news

Where are you now:Home >> News >> Industry news
Introduction to the specific steps of PCBA proofing process!
Time:2022-07-21 Read: 2627

With the development of the times, the electronic industry products are developing in a series of directions such as miniaturization, precision, thinning of the body, and fan heat dissipation. The requirements for PCB processing and assembly density are increasing. We all know that in the chip processing industry, when processing the chip, it is not only necessary to ensure the integrity of the chip, but also pay attention to the surface of the chip. Whether the solder joints are complete, because if the solder joints are incomplete, there will be a series of problems such as solder joint failure. The following will introduce the specific operation process of PCBA proofing:


  PCBA proofing operation process


  1. Customer orders


  The customer places an order with the PCBA processing factory according to the actual situation, and puts forward specific requirements. The PCBA processing factory will evaluate its own ability to see if it can complete the order. If the PCBA manufacturer determines that it can complete the order within a certain period of time, the two parties will negotiate to determine the details of each production.


  2. Production materials provided by customers


  After the customer decides to place an order, the PCBA processing factory will provide a series of documents and lists such as PCB electronic files, coordinate files, and BOM lists required for production.


  3. Raw material procurement


  The PCBA processing plant purchases the relevant raw materials from the designated suppliers according to the documents provided by the customer.

  4. Incoming material inspection


  Before PCBA proofing, all raw materials used, PCBA processing factory needs strict quality inspection. After being qualified, it can be put into production.


  5. PCBA production


  When doing PCBA proofing, in order to ensure the production quality, whether it is SMD production or welding production, PCBA processing manufacturers need to strictly control the furnace temperature.


  6. PCBA test


  PCBA processing plants also require strict testing, and only PCB boards that pass the test can be delivered to customers.


  7. Aftermarket packaging


  After the PCBA proofing is completed, the product needs to be packaged and then delivered to the customer to complete the entire proofing work.

Contact Us
Shenzhen Ledfocus Precision Manufacturing Co., Ltd.

Address: Room 1204, Dahong (Xinqiao) Science and Technology Innovation Park, No. 48, Xinyu Road, Shajing Street, Baoan District, Shenzhen

Phone: 0755-29727486 0755-83734215 0755-83734236

Person in charge: Mr. Fan 13088821718

Email: roman@leikashi.com

Business section #605

Email: allen@leikashi.com

Website: www.ya198.com

Service hotline
0755-83734236
? 2020 Shenzhen Ledfocus Precision Manufacturing Co., Ltd. All rights reserved 粵ICP備2021139374號
  • Links:
老汉的性生生活1一7| 国产成年无码av片在线| 精品久久香蕉国产线看观看亚洲| 久久精品国产男包| 久久久精品人妻无码专区不卡| 麻豆亚洲AV成人无码久久精品| 欧美黑人巨大精品videos| 性xxxxxx中国寡妇mm| 三年片在线观看免费大全| 免费看国产成年无码AV片 | 亚洲乱码国产乱码精品精大量| 一本大道精品成人免费视频| 无码人妻av免费一区二区三区 | 丰满熟妇videosxxxxx| 蜜臀AV无码精品人妻色欲| 久久久久久久亚洲AV无码| 一进一出一爽又粗又大| 爆乳上司julia中文字幕| 久久午夜伦鲁片免费无码| 国产韩国日本欧美的品牌suv| 山东chinese猛一猛gay| 优优人体大尺大尺无毒不卡| 美女视频黄是免费| 国产AV一区二区精品凹凸| 丰满爆乳无码一区二区三区| 国精产品一区二区三区有限公司| 中文字幕av一区二区三区| 亚州av综合色区无码一区| 国产麻传媒精品国产av| 波多野结衣 美乳人妻| 她扒下内裤让我爽了一夜a片| 欧美日韩精品乱国产| 和子发生了性关系的免费视频| (无码视频)在线观看| 嗯灬啊灬把腿张开灬动态图| 人妻偷人va精品国产旡码| 互换娇妻爽文100系列| 人妻少妇精品一区二区三区 | 母亲6韩国电视剧免费观看| 伊人成色综合人夜夜久久| 国产精品成人精品久久久|