East China Sea fused silica supplier Tokai fused silica supplier of silicon oxide (quartz, silica) amorphous (glassy). It is typical of glass, the atomic structure of the long-range disorder. Cross-linked by the three-dimensional structure of its high temperature and low thermal expansion coefficient. Selection of high-quality silica material [sio2> 99%] in the electric arc furnace or resistance furnace melting, the melting temperature of 1695-1720 ℃. Because of the high the sio2 melt viscosity in the 1900 ° C for the 7-th power of 10 Pa · s, can not use the casting method of molding. Cooling is to the vitreous can be used as firing products or do not burn products, raw materials. East China Sea fused silica supplier product is mainly used for precision casting, glass, ceramics, refractories and electronic industries. Purity fused silica supplier in the East China Sea: the silicon dioxide content of special one not less than 99.99%, a not less than 99.96%, two of not less than 99.95%, three shall not be less than 99.7%, with not less than four 99.6%.