Hebei Dong Huang Internal Combustion Engine Parts Co., Ltd. is a machinery manufacturing company of designing, casting, machining, testing and sales, established in 1994, and covers an area of 28, 000 square meters. The company mainly produces air compressor cylinders, compressor parts, Vacuum pump accessories, pump accessories and all kinds of precision castings which are made of gray cast iron and ductile iron, using coated sand modeling technology. Our Manufacturing Technology has reached first-class level in the world, mainly supporting the large Machinery Manufacturing enterprises both in domestic and abroad with annual export capacity of 1, 200 tons.