Qingzhou Auma Mining Machinery Co., Ltd. is located in Qingzhou City one of the Nine Ancient Cities in China, is a professional manufacturer of dredgers, waterweeds processing machines and related products with about 20 years experience. Our main products include sand suction dredgers, desilting dredgers, waterweed cutting ships, and mineral and metal processing machines. With an excellent technology team, we can design and manufacture highquality dredging and mining machines according to customers? requests. Our products are famous for easy operation, reliable performance, low cost and long working life.