History
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2020's
- 2024.05Developed metal fittings for 500kV ultra-high voltage direct current transmission (HVDC)
- 2023.04Developed metal fittings for capacity-increasing AL stranded cable (ASCC520)
- 2022.05Developed steel tower fall prevention device
- 2022.03Developed metal fittings for capacity-increasing AL stranded cable (ASCC430)
- 2021.03Developed Hardware for Pure Al. Low Sag Composite - core Conductor
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2010's
- 2017.10Developed Eco-friendly C/H Tower Attachment Fitting Sets
- 2017.07Established Mieum Plant
- 2017.05Developed Boltless Type Bundle Spacer
- 2015.07Developed Cako 250 Type Free Brackets
- 2015.07Developed Arrestor Devices for 345kV Transmission Line
- 2012.10Developed the electrical fittings for High Speed Railway
(132 kinds of electrical fittings including pulley type automatic tensioning device 2.6 ton) - 2011.02Appointed as a Localization Development Company for electrical fittings in the High Speed Railway (KR)
- 2010.12Appointed as a Development Company for Electrical fittings in the Project of Future High Speed Railway (KRRI)
- 2010.03Developed Boltless Type Spacer Damper for 6-Bundle
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2000's
- 2009.06 Developed Arrestor Devices for Transmission Lines
- 2007.07 Developed Prefabricated Jumper Devices for 765kV Single Circuit Transmission Tower
- 2006.12 Developed Grip Type OPGW Fittings
- 2005.08 Developed Quadruple Spacer Damper for 345kV Transmission Line (INNO-BIZ by SMBA)
- 2005.03 Developed Forging Disks & Rims for Automobile Wheels
- 2004.12 Developed Hold on Swing a Jumper Support String for 154kV Transmission Line
- 2004.07 Developed V-String Insulator Set for 765kV Transmission Line
- 2004.06 Established an Electric Technology Laboratory (No.20041815)
- 2000.12 Developed Boltless Type Spacer Damper for Transmission Line
(Spacer Damper Locking Device for a Power Bundled Transmission Line, Patent in Japan No.3273160)
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1990's
- 1999.03 Developed Tower Fittings and String Set for 765kV Transmission Line
- 1999.02 Developed & Supplied the Fittings through Participation in Gyeongbu High-speed Railway (KTX) Consortium
- 1995.12 Contracted the Technology Agreement for Electrical Hardwares and Accessories with SANWA TEKKI Co., Ltd. in Japan
- 1994.11 Developed Tensioning Device of 3 Ton and Spring Type Tensioning Device for Railway
- 1992.01 Listed on the KOSDAQ Stock Market (No. 94)
- 1991.12 Developed Tricot & Rachel Beams 21", 30" and 40" for Textile Equipment
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1980's
- 1989.09Contracted the Technology Agreement of 30" Tricot & Rachel Beam with WASHI BEAM Co., Ltd. in Japan
- 1988.08Constructed 2nd Factory in Changwon (AL Forging and AL Autocasting Factory)
- 1988.04Developed Surge Tank for Automobiles
- 1987.07Developed 20 kinds of Accessories for Electric Railway including Tunnel Brackets for the first time in Korea
- 1985.08Developed Spacer Damper for 4-bundle for 345kV Transmission Line
- 1984.07Developed Tower Fittings and String Set for 345kV Transmission Line
- 1984.02Conversion to Corporation 'SEMYUNG Electric Machinery Co., Ltd.'
- 1983.03Contracted the Licence Agreement for Spacer Damper Manufacturing Technology with Brush Power Equipment Limited (BPEL) in U.K.
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1960's
- 1969.07Developed Hardware for 154kV Transmission Line for the first time in Korea
- 1962.04Founded SEMYUNG Electric Commercial Firm in Busan
