狠狠色丁香婷婷综合橹88I中文一二区I欧美日韩国产一区二I国产手机avI在线看片成人I日本最新一区二区三区I国产网红在线观看I在线观看aa

Cr

  


鉻粉1.jpg  


鉻2.jpg


鉻3.jpg



Introduction

Purity:   99.9%-99.95%
Shape:granule,Block
Appearance:silver white,metallic luster
Melting   Point:1857℃
Density:   7.19g/cm3



Scan and pay attention to the public number