... coating,rubber,insulation,plastic,welding 1. Wet Ground Mica Powder SizeOverSieve %Sand %Loose DensityWaterLostWhitenessDia-thickRatio120µm/120mesh250 ... 4.3>70>70 2. Dry Ground Mica Powder Size900µm/20mesh450µm/40mesh300µm/60mesh150µm ... For electrode, painting material, paint, rubber, fire control, plastics, paper making, asphalt felt, decoration, oilwell drilling and cosmetics, etc. dry mica powder for ...