国产亚洲AV片在线观看18女人,日韩精品极品视频在线观看免费,日产精品卡二卡三卡四卡区,国产精品欧美久久久久无广告,人妻插B视频一区二区三区

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：