Zhejiang Taizhou Triunion Co., Ltd., 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. We manufacture our PVC Pressure Fittings in accordance with ISO Standard and DIN Standard, HDPE Fittings with SDR17 SDR11 PE100 for water supply in accordance with DIN Standard, PP Compression Fittings in accordance with UNI, DIN and ISO Standard, PP-R Pipes and Fittings for Water Supply in accordance with DIN Standard, PVC Butterfly Valves in accordance with DIN, ANSI and JIS standard, SMC Composite Manhole Covers in accordance with BS EN124 and Australian AS3996 Standard.Having competed in the market for years, we have become a famous manufacturer and exporter with a long-standing and high reputation. Our competitive prices, experience, efficiency, and reliability have won us confidence and praise among our many clients from all over the world. We always keep our enterprise idea: Honesty and Equality, Mutual Benefit and Win-Win.Main Products: PVC Fittings for Water Supply, PVC Butterfly Valves, PE Fittings for Water Supply, PP Compression Fittings for Water Supply, SMC Composite Manhole Covers