Beijing Chaoda Manufacture Bellows Co. Ltd, established in 2001,as a new and high-tech enterprise (recognized by Beijing Scientific and Technical Committee) with 12 million RMB registered capital, 70 thousand square meters area, 126 employees, seventy million RMB annual production. It is a professional manufactory producing expansion joints, flexible metal hoses, corrugated tubes, non-metallic expansion joints and so on. All products have been widely applied in Chemical & Petrochemical, Mechanical Manufacture, Power, HVAC, Traffic, etc. Modern management system, advanced technology and facilities, reliable quality, and excellent service guarantees that make our products be fulfilled any requirements of expansion joints . In addition, our products have passed ISO9001, GB/T9001-2000 Quality Management system Certificate and Manufacture License of Special Equipment. As a first-class supplier of China National Petroleum Corporation we strictly follow quality control procedures to ensure that our products meets industry standards as applicable: GB/T12777-2008 and EJMA.Low price, high quality and extensive experiences, it's your best choice.