久久久久一本毛久久久_成在线人免费视频一区二区_老司机精品视频一区二区_逼操一区二区三区 久久艹鲁鲁射,97无码视频在线看视频,久久强奷乱码老熟女,亚洲天堂日本在线观看

Molecular Formula：

SnO

Molecular Weight：

134.71

Physical and Chemical Properties：

Brown black powder

Use：

Mainly used as a coloring agent in the glass industry; Ceramic material additives; Electronic industry; reducing additive; In the field of electroplating, it is dissolved in sulfuric acid for acid electroplating or in the form of tin hydroxide for immersion tin plating.

Package：

25kg/drum or 30kg/calcareous plastic box，or customized

Main Technical Index: