Product Description Fused silica is manufactured from silica sand , thrugh high temperature fusion, cooling, samsh and selecting. The powder is produced using fused silica lump as material, it’s white powder of high purity and amorphous. With the quality of low linear expansion coefficient, low stress and low radioactivity Chemical Composition(%): SiO2 ≥ 99.9 Fe2O3 ≤ 15ppm Li2O ≤ 1.0ppm Al2O3 ≤ 25ppm K2O ≤ 20ppm Na2O ≤ 11ppm Applications: 1. Used in precision casting 2. Refractories and optical glass manufactoring. 3. Grinding wheel abrasives and high quality glass production. 4. Mainly applied in plastic seal used in large-scale and extra large-scale integrate circuit 5. Epoxy resin, pouring, quartz rubber and other chemical industries. Package: 1. 1000kgs packed in a big bag 2. 25kgs/bag with 40 bags in a big bag 3. 25kgs/bag with 40 bags on a pallet Other package could be supplied as request. Company Information H&X is a professional supplier of abrasive and refractory material in China. We put our business reputation at the first position all the time. Our goal is to supply good quality product at better price with best service. We started our business since 1998. We supply abrasive grains, powder for abrasives tools, grinding, polishing, sandblasting, etc. Refractory materials for melting, foundry, minerals for ceramic, glass and constraction, including silicon carbide, fused alumina, silica, garnet, etc. With over ten years knowhow in this field, we've established long-term stable business relationship with customers worldwide. Sincerely invite your esteemed company to cooperate with us. You will get: 1. competitive pricing 2. technical sales support 3.shorter lead time 4. all details informed for every order 5.credit saved for better payment term