PPR pipe and fitting Equal Coupling 1.Material:YanshangPPR 2.Size:20,25,32,40,50, ... ,110 3.Cert.:ISO9001,CE 4.OEM PPR pipe and fitting Equal Coupling1.Material:YanshangPPR2.Size:20,25,32,40,50 ... provide OEM processing for large clients in their own famous brand names