Baoding Zhongda Casting Co., Ltd. (Tangxian Ruida Machinery Equipment Manufacture Co., Ltd.) is a large private company, which is integrated casting and machining manufacturing, and its stable capital is more than 180 million RMB. There are 68 management & special technicians. The company covers the area of 80,000 square meters and the building area is 60,000 square meters. The main casting and machining equipments are more than 400 sets. The main product of the company are ductile iron casting and gray iron casting, the annual production capacity is more than 50,000 tons.