1.content:sio2=>99.99% 2.density:2.2-2.3g/cm3 3.We can supply products according to your drawings 4.Your correct chioce: AOBO Application: Widely used in the field of semiconductor, solar, metallurgy, chemical industry, electric light source, photo-communication, medical equipment, scientific instruments and so on. Material: 99.99% silica sand Characteristic: 1, High quality competitive price and ...