Yima Yellow River Smeltery (huanghe cast plant yima city)is a middle scale private enterprise which is established and managed by personal, and has operating import and export rights; its total investment is up to 30 millions RMB; The plant installs 2500KVA,3000 KVA ,3500 KVA, 4000 KVA and 50000 KVA smelt furnaces which can produce 70000 tons of vice-white aluminum oxide and brown fused alumina abrasives, and nine set advanced granulating lines to produce white fused alumina, dense fused alumina, alumina and silicon carbide, etc?? The products are mainly exported and enjoys high and good reputation in domestic and foreign.