연혁
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 expansion valves
TGK Mexico S.A.de C.V. established in Mexico
Purchase contract of the new domestic production site was concluded with Nirasaki-shi, Yamanashi Prefecture
