芒果乱码国色天香,乱子轮熟睡1区,zσzσzσ女人极品另类,老外和中国女人毛片免费视频

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