... 3.different size 4.high purity quartz silica sandOur factory adopts the natural good quartz as raw material, it is broken ... techniques, in this way, it can efficiently protect the quartz’s natural structure, so it delays its usage cycle ... , 40-70mesh, 100-200mesh, 270mesh, 325mesh, 400mesh, 500meshApplication:Silica Quartz is widely used in aerospace,electronic epoxy encapsulation, precision casting ...