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.