Huayang technologies pte ltd was founded and incorporated in singpore in 2004. It provides industrial chemicals product and enviromental engineering products and consultant services, and specializes in manufacutering nickle / cobalt / molybdenum / copper / zinc / lead production. We are trading other mineral materials such as Antimony / vanadium / Tin / Copper / Cobalt / Tungsten wiht any forms, ore / concentrate / sludge / residue and spent catalyst We have strongreserch background and would l...