We make transparent quartz glass with highly pure crystal melt by oxyhydrogen flame. It is transparent and bubble-free, having high content of SiO2, high temperature resistance. It's widely used in the semiconductor industry and in laboratories, in forms of rods, tubes, crucibles, furnace tubes, cassettes and all the instruments and vessels. For the solar energy PV industry is rapidly developing, our products have been used by the major domestic companies in the fields of photovoltaic industry, especially the big inch furnace tube of transparent quartz glass and the solar photovoltaic containers.