DSETech
Corporate brand
UnclaimedSouth Korean semiconductor equipment parts specialist founded in 2005, focused on repairing and supplying vacuum valves, diaphragm valves and RF systems.
Last updated September 29, 2026
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Overview
DSETech (Korean: 디에스이테크) is a South Korean company that specializes in the repair, refurbishment and supply of core components used in semiconductor manufacturing equipment. Its name is presented on its official website as an acronym for "Dynamic Software Equipment Technology." The company was established in 2005 as a sole proprietorship (개인기업) engaged in the manufacture, repair, modification and improvement of semiconductor equipment parts, and was converted into a corporation (법인) in 2015 with stated capital of KRW 200 million. DSETech's product and service focus is on three main categories: vacuum valves, diaphragm valves and RF (radio frequency) systems. These are critical consumable and wear components inside semiconductor process tools such as etch, deposition and ALD (atomic layer deposition) systems. Rather than only selling new parts, DSETech has built a business around high-quality repair and technical diagnostics of these components, which is a recurring need for chipmakers and equipment makers. The company states that it supplies domestic and overseas major customers with its products and aims to become a world-leading specialist in semiconductor equipment core parts. Over the years DSETech has registered numerous patents related to its niche. These include a portable exhaust device for semiconductor manufacturing equipment, a bolt loosening prevention structure, a thermocouple gauge controller with Baratron gauge output characteristics, a PXE-based semiconductor production equipment control device, diagnostic devices for vacuum angle valves, butterfly valves and pendulum valves based on operating state, an ALD valve normal-operation test device, a gas valve repair device and method, and an EFEM pressure monitoring and pressure control device and method. This patent portfolio reflects the company's engineering-driven positioning in equipment component repair and diagnostics. DSETech has been registered as a partner/supplier to SK hynix since 2009 and to the Wuxi SK hynix operation in China since 2011. It established a Chinese subsidiary in July 2018 and registered with Wuxi SK hynix as a partner in January 2021. In 2023 the company moved to a newly constructed headquarters in Yongin, Gyeonggi-do. It has obtained ISO 9001 and ISO 14001 certifications (2014), ISO 45001 (2024), and has been recognized as a venture company (innovative growth type), a management-innovation SME (MAIN-BIZ), and a specialized company in materials, components and equipment. In 2024 it registered as a Samsung Electronics Business Partner for gas valve repair and was selected as a designated company for military service (병역지정업체). DSETech remains a privately held small-to-medium enterprise. Its official website is www.dsetec.com, and its operations are concentrated in South Korea with a manufacturing/support presence in China through its subsidiary.
History
DSETech was founded in March 2005 as a sole proprietorship (개인기업) under the name 디에스이테크, engaged in the manufacture, repair, modification and improvement of semiconductor equipment parts. In August 2008 the company developed a domestically produced plasma tube (Plasma Tube 국산화 개발), marking an early localization achievement. In January 2009 it established an RF Repair system and developed related technology, and in July 2009 it registered as a partner/supplier to SK hynix. In October 2011 DSETech registered as a partner to the Wuxi SK hynix operation in China, extending its customer base beyond Korea. In November 2013 it registered a patent for a portable exhaust device for semiconductor manufacturing equipment (제10-1329634호). In January 2014 the company obtained ISO 9001 (quality management) and ISO 14001 (environmental management) certifications, and in May 2014 it registered a patent for a second portable exhaust device for semiconductor manufacturing equipment (제10-1400066호). In July 2014 it registered a patent for a bolt loosening prevention structure (제10-1416704호). In March 2015 DSETech converted from a sole proprietorship into a corporation (법인 전환) with stated capital of KRW 200 million. In January 2016 it developed and applied its own ERP system with QR-code-based product management. In March 2017 it was recognized as having an affiliated corporate research institute (기업부설연구소 설립 인정). In July 2018 it established a Chinese subsidiary (중국 법인 설립), and in October 2018 it registered a utility model for a thermocouple gauge controller with Baratron gauge output characteristics (제20-0487790호). In January 2020 DSETech developed Gas Valve Repair technology. In January 2021 it registered as a partner to Wuxi SK hynix in China, and in October 2021 it was selected as a "best workplace company" (최고일자리 기업) by the Korea Credit Guarantee Fund (신용보증기금). In June 2023 it moved to a newly constructed headquarters in Yongin (용인 본사 신축 이전). In August 2023 it registered patents for diagnostic devices for vacuum angle valves, butterfly valves and pendulum valves based on operating state (제10-2571198호), and in October 2023 it registered a patent for a PXE-based semiconductor production equipment control device and method (제10-2595771호). In 2024 DSETech continued to expand its certifications and partnerships. In January 2024 it obtained ISO 45001 (occupational health and safety management system) certification, was certified as a management-innovation SME (MAIN-BIZ), and was certified as a specialized company in materials, components and equipment. In February 2024 it registered a patent for an ALD valve normal-operation test device and method (제10-2635905호). In March 2024 it established an in-house labor welfare fund (사내근로복지기금). In April 2024 it was confirmed as a venture company (innovative growth type). In June 2024 it was confirmed as a leading company for learning-centered field training (전기·전자) by Seoul Metropolitan City, and registered a patent for a gas valve repair device and method (제10-2676955호). In July 2024 it registered as a Samsung Electronics Business Partner for Gas Valve Repair and registered a patent for an EFEM pressure monitoring and pressure control device and method (제10-2705511호). In October 2024 it was selected as a designated company for military service (병역지정업체).
- 2024
Obtained ISO 45001 certification; certified as MAIN-BIZ and as a specialized company in materials, components and equipment.
- 2024
Registered patent for ALD valve normal-operation test device and method (No. 10-2635905).
- 2024
Established in-house labor welfare fund.
- 2024
Confirmed as a venture company (innovative growth type).
- 2024
Confirmed as a leading company for learning-centered field training (electrical/electronics) by Seoul Metropolitan City; registered patent for gas valve repair device and method (No. 10-2676955).
- 2023
Moved to newly constructed headquarters in Yongin.
- 2023
Registered patents for diagnostic devices for vacuum angle valves, butterfly valves and pendulum valves based on operating state (No. 10-2571198).
- 2023
Registered patent for PXE-based semiconductor production equipment control device and method (No. 10-2595771).
- 2021
Selected as a best workplace company by Korea Credit Guarantee Fund.
- 2020
Developed Gas Valve Repair technology.
Products and positioning
Specialist repair and supply of core semiconductor equipment components, targeting major domestic and overseas chipmakers and equipment makers.
Vacuum Valve
Core component of semiconductor production equipment, repaired and supplied by DSETech.
Diaphragm Valve
Core component of semiconductor production equipment, repaired and supplied by DSETech.
RF System
Core component of semiconductor production equipment, repaired and supplied by DSETech.
Gas Valve Repair
Repair service for gas valves, registered as a Samsung Electronics Business Partner activity in 2024.
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