亚洲a级在线观看|夫妇交换性3中文字幕|在线看片网站,欧美激情狂野,91视频社区,精品电影一区二区三区

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：