欧美三日本三级少妇三级久久,久久国产精品99久久久久久,日韩精品毛片无码一区到三区 ,玩弄CHANEL妇熟女

Si

微信圖片_20220427103952.png

  

c04ed616e2aade879fe9dc4b34ef08bd.jpg


硅靶.jpg





Introduction: mainly used in the coatings of optics, 3C, semiconductors, touch display, solar photovoltaic, large-area architectural and decorative glass


Purity: 99.95%-99.999%

Shape: planar, rotary

Appearance: dark grey

Density: 2.32g/cm3

Specification: customized



Scan and pay attention to the public number