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 Goal: Stability - Efficiency - Accuracy – Durability


T-ONE-S (MFG) TRADING INC., established in 1968, is the professional manufacturer and export of various VALVES and PIPE FITTING, FLANGES, BOILER PARTS and STEAM accessories etc., for more than 50 years.  

Through the years, "Efficiency and Accuracy" have been the goal we pursue. To provide high quality and satisfy customers, with continuous efforts, we are working towards goal through a Quality Assurance System, which has given us the ISO9001:2015.

To provide the competitive prices and prompt delivery, we have invested to our expansion.  Established in 1988, Pro Uni-D Corporation in Taiwan specializes in Solenoid Valves and Electric Actuators.  Established in 1989, Sino-Thai Metal Casting Co., Inc. in Thailand specializes in producing St.St. Pipe Fittings, Flanges and Valves.  

Not only supply “ 317 ", " mit-UNiD-cns " products, we also research the relevant products for customer needs.  Our organization is dedicated to provide customers with best service of every aspect. We strongly believe, that the friendship and trust given by our customers, is the great treasure we have products including Bronze, Brass, Cast Iron, WCB, Stainless Steel valves such as Safety relief valve, Ball, Gate, Globe, Check, Butterfly, Float, Needle, Pressure Reducing, Wafer Check, Diaphragm & Cylinder Control Valve, Solenoid Valve, Electrical Actuator, Pneumatic Actuator, Pipe Fitting, Tube Fitting and Flange. Screw ends conforms to BSPT, NPT and DIN specification, while Flange ends conform to JIS, ANSI, BS 4504, PN10, PN16 Standard.    

All efforts are dedicated to building on our reputation for superior product performance and reliability.  Customer satisfaction with our products is important to us. We keep continuously to strength the efficiency and fluent system of production.