最新国产理论片在线视频观看,一个人看的www视频免费观看,久久视频,V久久国产精品免费一区二区三区,国产视频综合,中文手游下载,国产91在线爆乳

ZnS

硫化鋅2.jpg  


硫化鋅3.png


硫化鋅1.jpg


Introduction

Purity: 99.99%

Shape:granule

Appearance:white
Melting   Point:1700℃
Melting   Point:1701℃




Scan and pay attention to the public number