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

WTi

鎢鈦.jpg


Introduction: mainly used in semiconductor coating, photovoltaic solar coating

 Proportion: 90/10,wt% or customized

Purity: 99.9%-99.99%

Shape: planar, rotary

Appearance: silver grey

Density: depends on proportion

Specification: customized


Scan and pay attention to the public number