| 1959 | Established as Toho Gas Kogyo Co.,Ltd., in Daimachi, Hachioji-shi, Tokyo to market LPG and manufacture industrial equipment (Capital: 2 million yen) |
|---|---|
| 1961 | In addition to LPG operations, begin manufacuturing and marketing control valves for car heaters |
| 1962 | Narahara Plant established in Narahara-machi, Hachioji-shi, Tokyo Begin manufacturing and assembling oil coolers and car heater cores |
| 1963 | Begin manufacturing and marketing wiring components for car heaters as well as variety of test equipment |
| 1964 | Begin manufacturing and assembling automotive radiator tanks and dual-tube oil coolers |
| 1965 | Company's capital increased to 5 million yen Strengthen manpower for development technology to be ready for expansion in automotive industry |
| 1967 | Narahara Plant expanded to handle rapidly increasing orders for car heater valves and radiator tank assembly Sanda Plant built in Sanda-machi (currently Higashi-Asakawa-machi), Hachioji-shi, Tokyo |
| 1968 | Begin manufacturing newly developed press-type water control valves at Sanda Plant |
| 1970 | The second construction of Sanda Plant completed The head office moved from Daimachi to Sanda Plant |
| 1971 | Begin manufacturing a major new product: vacuum actuator Company's capital increased to 10 million yen |
| 1972 | Begin manufacturing newly developed fast idling control devices (FICDs) Begin full-scale production of control devices for car air conditioning systems |
| 1973 | Nitto Co.,Ltd., a joint venture with Nippon Radiator Co.,Ltd.,(currently Calsonic Kansei Corporation) established in Fukushima Prefecture Begin manufacturing fuel caps |
| 1975 | Begin manufacturing aluminum tube products and newly developed vacuum microswitches Strengthen the product line for vacuum systems |
| 1976 | Kunugida Plant opened in Kunugida-machi, Hachioji-shi, Tokyo and begins mass production of control devices for air conditioning systems |
| 1977 | The head office moved from Sanada Plant to Kunugida Plant |
| 1978 | Enter the field of electrical and electronic control devices by manufacturing bimetal ambient switches |
| 1979 | Begin manufacturing magnetic control valves for fuel systems The second plant, the warehouse and the building for quality control constructed and expanded at Sanda Plant Begin developing control devices for refrigerant systems |
| 1980 | Get new business of control system components for automotive air conditioning Begin manufacturing sensors including in-car sensors |
| 1981 | Begin manufacturing binary switches for use as refrigerant pressure switches |
| 1982 | Receive orders for temperature-controlled automatic expansion valves for use as refrigerant control devices Expand Kunugida Plant to manufacture these products |
| 1983 | Begin full-scale production of expansion valves Start exporting pressure switches |
| 1984 | Begin manufacturing newly developed motor actuators Company name changed to TGK CO.,LTD. Company’s capital increased to 75,474,000 yen |
| 1985 | As the effect of a strong yen and trade friction, begin developing products for home use to respond to growing trend of domestic demand-oriented industries |
| 1986 | Expand marketing to other fields Begin manufacturing control devices for gas water heaters for home use |
| 1987 | Switches & sensors, motor actuators and temperature-controlled automatic expansion valves grow to TGK main product categories |
| 1988 | Shiroyama Plant built in Shiroyama-machi, Tsukui-gun(currently Machiya Midori-ku Sagamihara-shi), Kanagawa Prefecture for business expansion in the 21st century Manufacturing bases for all TGK products established |
| 1989 | Celebrate 30th anniversary and make a fresh start for the next era Begin manufacturing electronic control valves (ECV) for car air conditioning compressors |
| 1990 | Expand in-house manufacturing of plastic components at Shiroyama Plant Begin manufacturing proportional oil control valves for home applications |
| 1991 | Begin manufacturing and marketing capsule-type expansion valves and brushless in-car sensors |
| 1992 | Begin manufacturing and marketing TB valves for multifunction home toilets |
| 1993 | Begin manufacturing aluminum oil coolers at Shiroyama Plant using Nocolok brazing method, and start marketing them |
| 1994 | Begin full-scale production and export of miniblock-type expansion valves Joint venture TGK Europe s.r.l. established in Italy |
| 1995 | Begin manufacturing and marketing miniblock-type expansion valves for Japanese domestic market |
| 1996 | Shiroyama Plant expanded |
| 1998 | ISO9001 and QS-9000 certified |
| 1999 | Celebrate 40th anniversary Begin manufacturing integrated control valves for electric vehicles as the next generation car air conditioner control devices |
| 2000 | Begin manufacturing two new products: mixing valves with water-shutoff functions for hot water plumbing, and mechanical cisterns for baths |
| 2001 | Begin manufacturing new full-reheat motor valves |
| 2002 | Begin manufacturing pressure sensors for equipment and dehumid valves for home air conditioning systems |
| 2003 | Begin manufacturing mechanical control valves (MCV) for variable
displacement compressors TGK North America, Inc. established in Michigan, USA |
| 2004 | Shiroyama Plant expanded to meet increasing demand |
| 2005 | ISO/TS16949 certified |
| 2007 | ISO14001 certified |
| 2008 | Technical Center established next to Shiroyama plant Engineering Div. relocated from the head office to Technical Center TGK Technical Center Germany GmbH established in Muenchen,Germany |
| 2009 | Celebrate 50th anniversary Begin manufacturing small mini-block type expansion valves Begin manufacturing and marketing humidity sensors |
| 2011 | TGK CHINA CO., LTD. established in Shanghai, China |
| 2012 | TGK KOREA CO., LTD. established in Cheonan, Korea |
| 2013 | Tana Plant opened in Tana, Chuo-ku Sagamihara-shi, Kanagawa Prefecture to expand in-house manufacturing of machined parts |
| 2014 | Begin manufacturing of water solenoid valves for water dispenser |
| 2016 | A plant in TGK KOREA CO.,LTD. constructed as a production base of miniblock- type
expantion valves TGK Mexico S.A.de C.V. established in Mexico |
| 2018 | Nirasaki Plant opened in Nirasaki-shi, Yamanashi Prefecture. IATF16949 certified |
| 2019 | Celebrate 60th anniversary |
