Tongyu Heavy Industry Co., Ltd. engages in the research and development, manufacture, and sale of forgings and castings. It offers wind power generator main shafts, cylinders, gear rings, ductile iron casting pipe molds, cold work rolls, support rolls, steam turbines and generators, cranks, marine shafts, pressure vessel forgings, machine tool, forging blanks, ESR and steel ingots, etc., as well as fabrication products and alloys. The company also offers rudder systems, forgings, such as intermediate shafts, propeller shafts, rudder stocks, rudder pintles, crankshafts, as well as engages in alloy production and sales, non-ferrous metal smelting and rolling processing industry, power generation, industrial and civil heating, forging material manufacturing and sales, casting manufacturing and sales, energy development, marine engineering and petrochemical equipment, new energy power generation, research and development and manufacturing of special equipment for power stations.