中文字幕人成乱码在线观看,在线精品观看,日本精品久久久久久久,久久视频在线视频,日本护士在办公室里被躁

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