cangzhou tanso couplings co., ltd. (the former botou tianshuo couplings factory) specializes in the research and production of expansion coupling sleeve, mechanical drives and mechanical seals. thanks to our years of experience in research and development of couplings, and favorable conditions and dominant advantages in research and development of high-precision products and mass production, the company can meet customers’ demands. the company has passed the certification of iso9001-2000 quality management system, and realized cad computer aided design and information management, integrating research, development and manufacturing. the company boasts its rich manufacturing experience, strong technical force, complete testing meanings, complete range of specifications and stable and reliable quality. since its establishment, the company has sold its products throughout china, winning wide appreciation from customers. based on credit principle, the company has established long-term cooperative relationships with a number of customers. at present, the company, by further strengthening staff training, improving technology level and injecting high-tech contents into products, strives to offer products of top quality and preferential prices.