 １９５９ |
The company is 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 our LPG operations, we begin manufacturing and marketing control valves for car heaters. |
| １９６２ |
The Narahara Plant is established in Narahara-machi, Hachioji-shi, Tokyo. We begin manufacturing and assembling oil coolers and car heater cores. |
| １９６３ |
We begin manufacturing and marketing wiring components for car heaters as well as a variety of test equipment. |
| １９６４ |
We begin manufacturing and assembling automotive radiator tanks and dual-tube oil coolers. |
| １９６５ |
The company's capital is increased to 5 million yen. We enhance our technology development to support the expansion of our automotive industry operations. |
| １９６７ |
To handle rapidly increasing orders for car heater valves and radiator tank assembly, the Narahara Plant is expanded and the Sanda Plant is built in Sanda-machi(now Higashi-Asakawa-machi), Hachioji-shi, Tokyo. |
| １９６８ |
The Sanda Plant begins producing our newly developed press-type water control valve. |
| １９７０ |
When the second expansion of the Sanda Plant is completed,the company's head office is moved from Daimachi to the Sanda Plant. |
| １９７１ |
We begin manufacturing a major new product : vacuum actuators. The company's capital is increased to 10 million yen. |
| １９７２ |
We begin manufacturing our newly developed fast idling control devices (FICDs). Full-scale production of car air conditioner controllers begins. |
| １９７３ |
Nitto Co.,Ltd., a joint venture with Nippon Radiator Co.,Ltd., is established in Fukushima Prefecture. The production of fuel caps begins. |
| １９７５ |
We begin manufacturing aluminum tube products and our newly developed vacuum microswitches. Our vacuum components strengthened. |
| １９７６ |
The Kunugida Plant opens in Kunugida-machi, Hachioji-shi, Tokyo, and begins the mass production of air conditioner controllers. |
| １９７７ |
The company's head office is moved from the Sanada Plant to the Kunugida Plant. |
| １９７８ |
We enter the field of electrical and electronic controllers by beginning the manufacture of bimetal ambient switches. |
| １９７９ |
We begin manufacturing magnetic control valves for fuel systems. The second plant, warehouse, and quality control operations are expanded at the Sanda Plant.We begin developing controllers for refrigerant system. |
| １９８０ |
We receive many orders for car air conditioner controllers. We begin manufacturing sensors, including in-car sensors. |
| １９８１ |
We begin manufacturing binary switches for use as refrigerant pressure switches. |
| １９８２ |
We receive orders for temperature-controlled automatic expansion valves for use as refrigerant controllers.To manufacture these products, we expand the Kunugida Plant. |
| １９８３ |
Full-scale production of expansion valves begins. We begin exporting pressure switches. |
| １９８４ |
We begin manufacturing our newly developed motor actuators.The company's name is changed to TGK Co.,Ltd., and the capital is increased to 75,474,000 yen. |
| １９８５ |
Due to the rising value of the yen and increased trade friction, TGK begins developing products for the home to meet growing domestic industrial demand. |
| １９８６ |
We expand our marketing in other fields and begin manufacturing controllers for gas water heaters for the home. |
| １９８７ |
The company's growth is built around three main product categories : switches and sensors, motor actuators,and temperature-controlled automatic expansion valves. |
| １９８８ |
Looking ahead to the 21st century, TGK builds the Shiroyama Plant in Shiroyama -machi, Tsukui-gun,Kanagawa Prefecture. We now have a complete manufacturing base for all of our products. |
| １９８９ |
As TGK marks its 30th anniversary, we make a new start into the next era. |
| １９９０ |
We expand our in-house manufacture of plastic components at the Shiroyama Plant.We begin manufacturing proportional oil control valves for home applications. |
| １９９１ |
We begin producing and marketing capsule-type expansion valves and brushless in-car sensors. |
| １９９２ |
We begin producing and marketing TB valves for multifunction home toilets. |
| １９９３ |
We begin producing and marketing aluminum oil coolers at the Shiroyama Plant using the Nocolok brazing method. |
| １９９４ |
We begin the full-scale production and export of miniblock-type expansion valves. Our joint venture TGK Europe s.r.l. is established in Italy. |
| １９９５ |
We begin the production and marketing of miniblock-type expansion valves for the domestic Japanese market. |
| １９９６ |
The expansion of the Shiroyama Plant is completed. |
| １９９８ |
We receive ISO9001 and QS-9000 certification.We focus our assembly operations. |
| １９９９ |
The company celebrates its 40th anniversary. We begin manufacturing integrated control valves for the next generation of car air conditioner controllers for electric automobiles. |
| ２０００ |
We begin manufacture of several new products,including mixing valves with water-shutoff functions for hot water plumbing;mechanical cisterns for baths; and electronic control valves (ECVs) for car air compressors. |
| ２００１ |
We begin manufacture of new full-reheat motor valves. |
| ２００２ |
We begin manufacturing pressure sensors for equipment and dehumid valves for home air-conditioning unit. |
| ２００３ |
We begin manufacturing mechanical control valves (MCV) for variable displacement compressor.
TGK North America, Inc. is founded in Michigan, USA. |
| ２００４ |
The expansion of Shiroyama Plant is completed to meet the increased orders. |
| ２００５ |
ISO/TS16949 certified. |
| ２００７ |
ISO14001 certified. |
