... internal honeycomb structure), nontoxic, tasteless, noncombustible, non-corrosive, neutral pH value (pH value: 6.5-7.5), acid ... *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 ...