Tongyu Heavy Industry Co., Ltd. is engaged in the research, development, manufacture, and sale of forgings and structural components. Its products include wind power generator main shafts, cylinders, gear rings, ductile iron casting pipe molds, cold work rolls, support rolls, steam turbines, cranks, marine shafts, pressure vessel forgings, machine tool and forging blanks, ESR and steel ingots, as well as fabrication products and alloys. The company also offers rudder systems and forgings such as intermediate shafts, propeller shafts, rudder stocks, and rudder pins, and is involved in alloy production and sales, non-ferrous metal smelting and rolling processing, 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, and the research, development, and manufacturing of special equipment for power plants. Founded in 2002, the company is based in Yucheng, China.