Founded in 1975, Henan Dalin Rubber and Telecommunications Apparatus Co.,Ltd specializes in designing and manufacturing for pneumatic air tube and its accessories, Our main products including: Petroleum drilling clutch assembly and Rubber pneumatic air tube, Disc clutch air tube, EATON AIRFLEX replacement, Air tank capsule on mud pump, Ferroalloy air tube and special rubber products. Our company successively acquired National High and New Technology Enterprise Authentication, passed ISO9001:2008 International Quality System Authentication, OHSAS18001:2007 Occupational Health and Safety Management System Authentication, ISO14001:2004 Environmental Management System Authentication, won more than 20 national patents and provincial award for science and technology advancement. We are level A network supplier of China National Petroleum Corporation, China Petroleum and Chemical Corporation and China National Offshore Oil Corporation,