We, Seong Duck Techwin Co., Ltd (SDT), established in 2000.05, has been growing steadily. Seong Duck Techwi is aiming the global leading company in this field of industry.We put in a great deal of efforts on Valve manufacturing, Flange machining and Factory Automation ?etc from the beginning and have been expanding business range to the equipments and facilities for Oil & Gas, Power Plant , Petrochemical, Ship Building and On & Off shore industries with continuous and drastic investment.With core division R & D Center, well trained technical professionals to meet the needs of customers expectation of the quality, on time delivery with competitive price. By the recognition of our technological capability from customers, now we are steadily have been growing up and we built "ONESTOP" system (integrated production system from design to test) for Valves.