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
What are the requirements for PCBA processing?
Time:2023-08-24 Read: 2294

With the development of science and technology, many electronic products are developing in the direction of miniaturization and refinement, which makes the size of many SMD components smaller and smaller. Not only the requirements for the processing environment are constantly improving, but also higher requirements for SMT processing technology. To do a good job in PCBA processing and SMT patch work, the processing factory needs to do at least the following three points.


Three requirements for good PCBA processing


1. In the SMT process, everyone knows that solder paste is needed. For newly purchased solder paste, if not used immediately, it must be stored in an environment of 5-10 degrees. In order not to affect the use of solder paste, it should not be placed in a sub-zero environment.


Second, in the SMT process, the placement machine equipment must be checked frequently. If the device is old or some parts are damaged, it must be repaired or replaced with a new device to ensure that the patch is not bent. In this way, the production cost can be reduced and the production efficiency can be improved.


3. In the process of SMT processing, in order to ensure the quality of PCB board welding, we must always pay attention to whether the setting of reflow soldering process parameters is very reasonable. If there is a problem with the parameter settings, the quality of the PCB board soldering cannot be guaranteed. So in general, the furnace temperature must be checked twice a day, at least once. Constantly improving the temperature curve and setting the temperature curve of the welded product can ensure the quality of the processed product.


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: m.ya198.com

Service hotline
0755-83734236
? 2020 Shenzhen Ledfocus Precision Manufacturing Co., Ltd. All rights reserved 粵ICP備2021139374號
  • Links:
一二三四免费观看在线视频中文版| 久久99久久99精品免视看动漫| 小sao货叫大声点奶真大| 精品亚洲国产成人蜜臀AV| 几个东北熟妇的性经历| 古装三级三十部在线观看 | 巨胸美女露双奶头无遮挡| 男按摩师下面又粗又大| 色欲久久99精品久久久久久av| 男女啪啪高潮无遮挡免费| 人人狠狠综合久久88成人| 少妇性饥渴无码a区免费| 国产精品女a片爽视频爽 | 免费观看性欧美大片无片| 久久av无码精品人妻系列| 天天躁日日躁aaaaxxxx| 荡货 喂奶 h| 久久精品国产www456c0m| 国产精品亚洲一区二区三区在线| 亚洲精品中文字幕乱码三区| 久久人妻无码精品一区二区三区| 久久99国产精品久久| 性xxxxfreexxxxx| 国产免费久久精品99久久| 精品人妻无码一区二区三区牛牛| 无码欧美多人性站交大战| 国产在线拍小情侣国产拍拍偷| 欧洲美熟女乱又伦免费视频| 少妇人妻88久久中文字幕| 国产乱人激情h在线观看| 亚洲av第一成肉网| 久久久亚洲AV波多野结衣| 人妻少妇久久久久久97人妻 | 亚洲欧美日韩在线不卡| 亚洲成av人在线视| 同学的妺妺2在线观看| 善良娇妻让农民工发泄| 99久久久国产精品免费蜜臀 | 国产一区二区三区播放心情潘金莲| 曰韩人妻无码一区二区三区综合部 | 请给我运动员们|