欧美亚洲一区-日韩一区二区三区视频-欧美精品一二三区-免费一区二区-蜜桃视频网址-91丨porny丨中文-97黄色-成人涩涩视频-波多野结衣黄色片-亚洲性综合-欧美理论在线观看-美女污污网站-欧美亚洲一级-午夜欧美福利-精品国产丝袜一区二区三区乱码

Alkyl sulfonic acid system adopted, environment friendly, with stable system;

Simple composition, easy operation, easy for site production and management;

Special additive used, contributing to dense and uniform crystals of the coating, with good welding performance, wetting balances T2/3Fmax＜0.5S;

Uniform coating, small thickness difference between coatings in areas with high and low current density.

3461D is a pure tin electroplating potion exclusively designed in accordance with the barrel plating characteristics of such electronic products as passive components. It can ensure uniform and dense tin coating while ensuring the electroplating efficiency, thus ensuring excellent weldability of the plating workpiece. It is applicable to barrel tin plating of chip capacitors, resistors, electric induction products and other electronic.