High silica mesh is a special lass fiber mesh fabric with heat resistance, insulation, softness and good adsorption. The mesh size is 1.5-2.5mm, The performance of resistance to metal melt erosion, low gas generation, good residue filter effect, easy to use and so on. lt can be used in a 1000C environment for a long time, and the instantaneous heat resistance temperature can reach 1450° C. It is mainly used to make hich temperature resistant casting filter mesh, casting filter specia-shaped mesh, and can also be used as a composite substrate for high temperature resistant materials.