亚洲欧洲日产国码二区-jiz zz在亚洲-久久婷婷色综合老司机-日韩人妻无码AⅤ中文字幕

Cu

銅1.jpg  


銅2.png


銅3.jpg   

Introduction

Purity:   99.99%-99.999%
Shape:Block,   small cylinder, wafer
Appearance:red   copper, metallic luster
Melting   Point:1083.4℃
Density:   8.96g/cm3
Specification:   can be customized



Scan and pay attention to the public number