... make all kinds of plastic injection pipe fitting PPR union connector.In China, we are the leader of making plastic ... Union valves, check valves, membrane valves, bottom valves, gate valves, locking valves, deflation valves, water tapes, etc., made of ABS, U ... moulds like elbow, coupling, tee, reduce, cap, union, flange, flexible connector, water supply and sewerage pipe fitting moulds, etc. made of ...