久久久久婷婷国产综合日韩精品_亚洲AA精品无限毛片_A一区二区三区乱码在线欧洲_91在线精品小视频_天堂亚洲aⅴ在线观看_日韩AV无码久久精品换脸_中文无码日韩欧免_亚洲一区视频无码_中文字幕欧美爱亚洲_淦人软件不盖被子

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

Ledfocus Precision manufacturing

One-stop SMT/PCBA/OEM electronic contract manufacturing service provider

Technical Support

Where are you now：Home >> News >> Technical Support

After-sales service issues for PCBA processing

2021-11-26

Many customers are concerned about the after-sales service issues of PCBA processing, such as production quality, reliability of use, maintenance, etc. The after-sales service of PCBA is mainly in two aspects One is processing with supplied materia

The reason why PCBA processing shows false welding

2021-11-26

1. Oxidation of pads and component pins The oxidation of the pads and component pins can easily cause the solder paste to liquefy during reflow soldering, th……