history
1983 | Aug | Established as a manufacturer and supplier of stroboscope transformers for overseas markets |
Dec | Started production and supply of stroboscope transformers to the domestic market | |
1984 | Mar | Started production and supply of transformers for high frequency switching power supplies |
1985 | Jan | Increased the capital from 5million yen to 10million yen |
1986 | Nov | Moved its main office to Hino-shi, Tokyo |
1987 | May | Started production and supply of lighting inverter transformers |
1989 | Dec | Increased the capital to 30.4million yen with the progress of the achievements. |
Sep | Established the Thailand factory in Lamphun, Thailand | |
1991 | Sep | Established Yamanashi branch office in Tsuru-shi, Yamanashi |
1993 | May | Increased the capital to 32million yen with the progress of the achievements. |
1995 | Aug | Established the joint venture company in Dan Dong city, Liao Ning Province, P. R. China |
Oct | Begun design and production of Power Inductor coils | |
1996 | Apr | Established Hong Kong office |
Jul | Moved the head office from Hino-shi, Tokyo to Hachioji-shi, Tokyo | |
1997 | Feb | Thailand factory obtained ISO9002 certification |
1999 | Mar | Laos factory started the mass production |
May | Transferred the Yamanashi branch operation to overseas plant | |
Nov | Started mass production and shipment of surface-mount type stroboscope transformers for digital cameras | |
2000 | Jan | Started supply of SMD choke coils |
Feb | Thailand factory obtained ISO9001:2000 certification | |
Mar | Started mass production and shipment of subminiature trigger coils; succeeded in miniaturization of the volume by 30% | |
Apr | Started large-scale delivery of inverter transformers at 250,000 units/month | |
May | Started mass production and shipment of high withstand voltage trigger coils | |
Aug | Started mass production and shipment of surface-mount type choke coils with complete magnetic shielding; Improved the characteristics by 1.5 times compared with the previous models. | |
2001 | Jul | Started shipment of small and low strobe transformers |
2002 | Feb | Started shipment of encapsulated trigger coils |
Dec | Started shipment of trigger coils to cope with miniature reflow type | |
2004 | Aug | Thailand factory obtained ISO14001:1996 certification |
Oct | Established Kansai Branch | |
2005 | Mar | Established Tokyo Coil Hong Kong Ltd., Shenzhen office |
Oct | Started shipment of ultra-miniature booster transformers Started shipment of metallic Power Inductor coils | |
Dec | Laos factory obtained ISO9001:2000 certification | |
2006 | Developed and shipped LCD TV Power transformers, CCFL backlight balance transformers | |
2007 | Started full-scale production of Power transformers and balance transformers for liquid crystal TV | |
Aug | Thailand factory obtained ISO14001:2004 certification | |
Dec | Laos factory obtained ISO14001:2004 certification | |
2009 | Feb | Thailand factory obtained ISO9001:2008 certification |
2010 | Nov | Laos factory obtained ISO9001:2008 certification |
2012 | Feb | Building Product Automation of Power Inductor SHP series in Thailand factory |
2013 | Intensive Transformer/Triggercoil for Strobe in Laos factory | |
2014 | Quality Control and Production Management by IoT | |
2015 | Started production by labor-saving (smart line system) | |
Sep | Establishment of Nagoya Bussiness Office (from Kansai brunch relocate) | |
2016 | Establishment of TW Thailand (TWT) Co.,Ltd | |
Started Product Automation of All SHP series in Thailand factory | ||
Aug | Thailand factory obtained ISO14001:2015 certification | |
Dec | Laos factory obtained ISO14001:2015 certification | |
2017 | Joint-venture of DCE (Dangdong Dadong Coil Engineering Co.,Ltd.) was dissolved | |
Started Production of Nickel Ferrite Core in Thailand factory |
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Dec | Laos factory obtained ISO9001:2015 certification | |
2018 | Feb | Thailand factory obtained ISO9001:2015 certification |
2018 | May | Laos factory obtained Sony Green partner certification |
2018 | Aug | Thailand factory obtained IATF16949:2016 certification |
2021 | Sep | Nagoya sales office closed |
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