美女五月天_双性少爷挨脔日常h惩罚h动漫_日韩视频免费在线_亚洲综合国产精品_国产亚洲区_国产欧美一区二区三区精华液好吗_欧美精品性生活_美女被草视频网站_777奇米第四色_久久极品_亚洲日b视频_浴室偷拍美女洗澡456在线_日韩精品国产一区_涩涩国产_男女高潮网站

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：