ISO 14001

ISO 9001

registration form for the record of foreign trade managers

Disc spring Test Report certified by Hebei Province Institution of Supervision And Inspection Product Quality

Packing Test Report certified by National Quality Supervision and Inspection Center for Ceramics and Refractories

PTFE gasket Test Report certified by National Quality Supervision and Inspection Centre of Seal Products

PU Sealing Ring Test Report certified by National Quality Supervision and Inspection Center for Rubber Seal Porducts

Rubber Seal Products Test Report Certified by Hebei Province Institution of Supervision And Inspection Product Quality

Hebei Ohtello sealing material Co.,Ltd Joined Sinopec Corp procurement of E-Commerce network

President unit of Hebei Industrial Sealing Products Association

Belleville-spring-using-reports-of-Thuha-Oilfiled-Methanol-Workshop

Belleville-spring-using-reports-of-Yanshan-Petrochemical-Rubber-Factory

Gland-packing-using-reports-of-Anshan-Iron-and-Steel-Gruop

Hydraulic-sealing-elements-using-reports-of-Shanxi-TZ-Coal-Mine-Whole-set-Equipment-Co.,Ltd

Hydraulic-seal-using-reports-of-Benxi-Iron-and-Steel-Rolling-Factory

Mechanical-sealing-using-reports-of-Yangzi-Petrochemical-Refinery-Factory

Mechanical-seal-using-reports-of-Hudian-Power-International-Co.,Ltd

Packing-using-reports-of-Yanshan-Petrochemical-Rubber-Factory

Plate&Disc-spring&packing-using-reports-of-Nuclear-Power-Qinshan-Joint-Venture-Co.,Ltd

Spacer-plate-and-belleville-spring-using-reports-of-Daqing-Oilfiled-Co.,Ltd

Spacer-plate-using-reports-of-Baling-Branch-of-China-Petroleum&Chemical-Co.,Ltd

Spiral-wound-gasket-using-reports-of-Jinchuan-Group-Ltd.-Mining-Area