Chemical formula: SiO2  <br> Granularity range: 0.1-5mm can be customized<br> Silica is used for optical coating, manufacturing flat glass, glass products, foundry sand, glass fiber, ceramic color glaze, sandblasting for rust prevention, sand for filtering, flux, refractory material and manufacturing lightweight air-bubble concrete. It can be used to manufacture important parts, optical instruments and handicrafts in the electronics industry. It is an important raw material for manufacturing optical fiber. Rubber synthetic reinforcing materials, synthetic resin fillers, inks (inkjet printers), paint thickeners, matting agents, feed additives, quartz glass, glass glue.<br>