... : 1>.Construction :lightwight material ,light aggregate concrete ,heat-resisting material,wall material,bora firproofing ,fire mortar,fireproofing tile ... :sound-absorbing material,surken pipe ,greenhouse pipe ,heat preservation material ,in-built material indoor and tunnel ... public and ceiling 3>.Metallurgy :clad material in steel,ironmaking ,foundry,bulk material of vermiculite 4>.Horticulture ...