main product include carborundum vgraphite crucible ,which is widely used in carbon burning furnace , induction furnace , vacuum induction furnace , high temperature sintering furnace and electrical resistance temperature preservation furnace .this graphite crucible is mainly used in copper, aluminum, gold, silver, plumbum, stannum, Zin etc non-ferrous metals and its alloy smelting ,also used in glass materials and iron and steel melting .