Zhejiang Taizhou Triunion Co., Ltd.,Website:http://www.tupipe.com, as a member of Hongtu Group, is a joint corporation, which specializes in producing and selling High Quality PVC Fittings, PVC Butterfly Valves, PP Compression Fittings, HDPE Fittings, SMC Composite Manhole Covers of BS EN124 Standard and Australian AS3996 Series Products together with Hongtu Plastic Product Co., Ltd., Resin Chemical Co., Ltd., Yinyida Pipe and Fittings Co., Ltd. and Sanfa Plastic Co., Ltd.