Zhejiang Taizhou Triunion Co., Ltd. as a member of Hongtu group, is a union corporation, which specilize in producing & selling High Quality PVC-U Pipe and Fittings, PVC-U Valves, PP-R Pipe and Fittings, PP Compression Fittings, HDPE Pipe and Fittings, SMC Composite Manhole Cover Series Products with Hongtu Plastic Product Co., Ltd; Resin Chemical Co.,Ltd;Yinyida Pipe and Fittings Co., Ltd.; Sanfa Plastic Co., Ltd.;

Our PVC-U Pressure Pipes and Fittings accord with ISO 4422-2: 1996, GB/T 10002.1-1996, GB/T 10002.2-2003 & DIN 8063 and EN-1452 standard and PVC-U Pipes and Fittings for Drainage accord with BS 5255, BS 4514, BS 4660, ISO 3633, BS 4576 & GB/T 5836.2-92 standard, HDPE PE100 SDR17 Pipes and Fittings for water supply accord with GB/T 13663-2000 standard, PP Compression Fittings accord with UNI 9561-2, DIN 8076, ISO 14236 standard, PP-R Pipes and Fittings for Water Supply accord with DIN 8077 & DIN 8078 standard, and all kinds of PVC-U Butterfly Valves, PVC-U Check Valve, PVC-U Double True Union Ball Valve with DIN / ANSI / JIS / SCH80 standard, SMC Composite Manhole Cover accord with EN124-1994 & EN 20105-A03: 100 standard

Having competed in the market for years,we have become famous manufacturer and exporter of long-standing and high reputation. Our competitive prices, experience, efficiency, and reliability have won confidence and goodwill among our many clients from all over the world.

We always keep the enterprise idea: Honesty and Equality, Mutual Benefit and WinWin.

Main Businesses: PVC-U Fittings, PVC-U Valves, HDPE Fittings, PP Compression Fittings, SMC Composite Manhole Cover Series Products.