... (DVGW/EN1763) 2.material:PVC 3.ID:6.3mm/8mm Cixi xingcheng gas tackles co.,ltd, located ... our principle. With advanced process, strict testing, high quality materials, and great effort of our workers, ... have the CE certificate(regulator-EN12864, rubber hose-EN559,BS3212,DVGW), exported to more than ... the principle of credit, efficiency, strict quality control system and famous management.We sincerely ...