日本aa大片高清视频,国产一区二区电影院,97人洗澡人人澡人人爽人人模,精久久久久久久久竹菊

ZnSn

鋅錫靶.jpg



Introduction: widely used in the coatings of architectural glass, automotive glass, solar photovoltaic

Proportion: 50/50,wt% or customized

Purity: 99.95%-99.995%

Shape: planar, rotary

Appearance: silver

Density: depends on proportion

Specification: customized


Scan and pay attention to the public number