亚洲va在线va天堂va国产2020,日本亚洲欧美在线视观看,国色天香社区视频免费高清3,再猛点深使劲爽免费视频


Symbol:Cu
Purity:99.99%~99.999%
Form:Discs; Square; Slugs; Cylinders
Color / Appearance:Copper, metallic
Melting Point:1083.4℃
Theo. Density:8.96g/cm3