久久99精品久久久久久hb亚瑟-免费看无码毛视频成片-99热这里只有精品免费播放-亚洲精品少妇高清30p-国产午夜福利精品久久2021

Characteristic：

Green transparent crystals, soluble in water, insoluble in ethyl alcohol and methyl alcohol, slightly soluble in acid. It will lose 6 crystal water when heated to 103 ℃.

Application：

It is widely used for electroplating in such industries as automobile, hardwares, bathroom accessories, electronic elements, aerospace and PCB.

Advantage introduction：

Advanced production process and strict control over the production process, contributing to stable product quality;

Patented extraction technology, low content of metal impurities, contributing to industry-leading index;

The only Chinese brand that controls TOC, with low content of organic impurities, contributing to fast dissolution.

Technical indicators：