Jinjiuyi supply carbon fiber sheet thicknesses are from 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, and 8mm, ... to 25mm.
What's the difference between T300, T700 and T800 carbon fiber? We...
KN95 is one of the levels specified in the Chinese Standard GB2626...
After 2019 pneumonia (COVID-19), Our country controlled the virus...