最新国产理论片在线视频观看,一个人看的www视频免费观看,久久视频,V久久国产精品免费一区二区三区,国产视频综合,中文手游下载,国产91在线爆乳

NbOx

氧化鈮.jpg



Introduction: mainly used in decorative coating, antireflection coating, architectural and automotive glass coating, photovoltaic solar coating

Purity: 99.95%

Shape: planar, rotary

Appearance: grey and black

Density: 4.5g/cm3

Specification: customized



Scan and pay attention to the public number