... , glass , industry ect 3.good whiteness 4.high purity quartz silica sand makerOur factory adopts the natural good quartz as raw material ... 10-20mesh, 40-70mesh, 100-200mesh, 270mesh, 325mesh, 400mesh, 500meshApplication:Silica Quartz is widely used in aerospace,electronic epoxy encapsulation, precision ... bag .Delivery Detail:wighin 25days after confirm the contractPictures : quartz silica sand maker