... -1250mesh Use:cosmetic,coating,rubber,insulation,plastic,welding 1. Wet Ground Mica Powder SizeOverSieve %Sand %Loose DensityWaterLostWhitenessDia-thickRatio120µm/120mesh250µm<0 ... .5≤0.23≤1≤4.3>70>70 2. Dry Ground Mica Powder Size900µm/20mesh450µm/40mesh300µm/60mesh150µm/100mesh75 ... making, asphalt felt, decoration, oilwell drilling and cosmetics, etc. dry mica powder for electric welding rod