Braided Flexible hose,knitted hose,SS knitted hose. Material:Brass Nut,Brass Core,Stainless Steel Wire,EPDM Insert tube Braided Flexible ... ,knitted hose,SS knitted hose. PVC knitted hose.Material:Brass Nut,Brass Core,Stainless Steel Wire,EPDM Insert tube1. Flexible hose ... copper bar Factory of Group.2) Every valve put through a six-step QC process before delivery.Material Control, Machining Quality ...