超碰97人人做人人爱少妇-国产午夜精品av一区二区麻豆-在线点播亚洲日韩国产欧美-国产精品国产三级国产av主播

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