Air Duct Fabric Expansion Joint: The air duct fabric expansion joint is mainly composed of non-metallic ring belt, insulation materials and steel structure, of which the non-metallic ring belt is....
Tengyun began its trading in 1990s' , concentrating on pipeline fittings including compensators, rubber joints, expansion joints, waterproofing pipeline casing, flanges and duckbill valves, etc. With....