1.High puity refined silica sand 2.For glass,chemicals construction 3.For foundry,plastics,coating 4.Quartz powder SiO2 sand 1.Application of ... ; Refractory; Ferrosilicon Smelting; Solvent metallurgy;( glass,chemicals construction ,ceramics,foundry,plastics ,coating and others).2.Other name:Quartz sand,Quanrtz powder,SiO2 ...