亚洲AⅤ无码色情在线观看,校花被扒开双腿强行高潮,中文字幕亚洲乱码熟女在线,插b内射18免费视频

Cr

  


鉻4.jpg


鉻1.jpg


鉻5.jpg


鉻管.jpg



Introduction: mainly used in the vacuum coating of semiconductors, low-e glass, decorative and functional films

Purity: 99.5%-99.95%

Shape: planar, rotary

Appearance: silver

Density: 7.2g/cm3

Specification: customized



Scan and pay attention to the public number