... : 0.1-1mm,1-2mm,1-3mm,2-4mm,3-5mm,1-6mm,16-20mesh,14-20mesh,16-32mesh,20-40mesh ... , acoustic board, fireproof board. *Insulation materials for industrial furnaces and tubes*filtration agent for beer, drinking, food and medicine *slag collecting ... material for steel melting and insulation filler for air separator*Filler or expanding agent for rubber, paint, plastic, ...