亚洲成人av_不卡av片_人妻巨大乳hd免费看_黄色小说内容_三级视频片_av网站网址_为爱搞激情_色九区_性姿势伦理未删减版_www狠狠_秋葵视频成人_久操热久操_日本网站在线看_久草网在线_狠狠做

Characteristic：

Alkyl sulfonic acid system adopted, friendly operation environment, 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;
Low content of foams, easy to wash, strong ability to resist high temperature discoloration.

Application：

3471 is a matte tin potion exclusively designed in accordance with the characteristics of continuous plating. It can ensure dense and uniform tin coating while ensuring the electroplating efficiency, thus ensuring excellent ability to resist discoloration as well as excellent weldability of the product. It is applicable to roll-to-roll continuous matte tin plating process.

Advantage introduction：

Technical indicators：