Zhejiang Taizhou Triunion Co., Ltd. as a member of Hongtu Group, is a union corporation, which specilize in producing & selling High Quality PVC Fittings, UPVC / FRPP / CPVC / PP-H Butterfly Valve, UPVC / FRPP / CPVC / PP-H Ball Valve, UPVC / FRPP / CPVC / PP-H Check Valve etc, PE Micro, Drip and Landscape Irrigation Fittings, PP Compression Fittings, PP Universal Transition Compression Fittings, HDPE Fittings, SMC Composite Manhole Cover BS EN124 and Australian AS3996 Series Products with Hongtu Plastic Product Co., Ltd; Resin Chemical Co., Ltd; Shuntong Plastic Fittings Co., Ltd.; Sanfa Plastic Co., Ltd.; 

Our PVC Pressure Fittings accord with ISO 4422-2: 1996, GB/T 10002.1-1996, GB/T 10002.2-2003 and DIN 8063 and HDPE Fittings with SDR17 & SDR11 PE100 for water supply accord with GB/T 13663-2000 standard, PP Compression Fittings accord with UNI 9561-2, DIN 8076, ISO 14236 standard,PVC Butterfly Valves accord to DIN / ANSI / JIS standard, SMC Composite Manhole Cover accord with BS EN124-1994 and Australian AS3996-2006 standard,and PE Irrigation Fittings

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 Win Win. 

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