Zhengzhou state mechanical manufacturing co. Ltd. (chongzhou machinery) is a well-known enterprise with 40 years of experience in mill research and development. The company has an area of 18,000 m and a building area of 10,800 m. The company currently has more than 200 employees and over 30 professional technicians. The main products are small and medium-sized raymond mills, super fine mills, shredders, powder packers, etc., and various milling line equipment of high quality and preferential price。