Let us introduce ourselves to you in advance, we, Seong Duck Techwin Co., Ltd. has been growing steadily after established in 2000.Seong Duck Techwin Co., Ltd. is a specialized in forging flange, ball valve, seamless pipe, all kinds of fittings, shafts for shipbuilding, power plant, off-shore, oil & gas, petrochemical plant with bestquality, quick delivery, and low prices as you see our attached catalogue.As regards the main product of Ball Valve and Gate, glove, check, swing check valve etc., by the recognition of our technological capability from customers, now we are supplying the entire manufacturing system for Valve and we will build up the ONESTOPsystem (integrated production system from design to delivery) for the machinery in a near future.We can provide all kinds of valves for casting, forged as based O.E.M with your esteemed company.