HOME > About JS GROUP > History > History
Outline of The Group’s History
| 1949 | September | Nihon Tategu Kogyo Co., Ltd. (now JS Group Corporation) established. |
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| 1966 | April | Housing aluminum sash business commences. |
| 1969 | August | Nakazato Plant (now Noda R&D Center), the first plant equipped with an integrated production line, completed. |
| 1971 | October | A newly formed Toyo Sash Co., Ltd. established by absorbing Toyo Door and four other companies. |
| 1974 | November | Housing exterior business commences. Toyo Exterior Co., Ltd. established. |
| 1977 | April | Home center business commences. Viva Home Corporation (later Tostem Viva Corporation) established. |
| September | Sash business for commercial building commences. Production of sashes for commercial buildings commences with the completion of Kuki plant. | |
| 1984 | May | Homebuilding franchise chain operation commences. Eyeful Home Technology Inc. established. |
| 1985 | February | Sash business for super-high-rise buildings reinforced. Mitsui Light Metal Processing Co., Ltd. joins the Group, followed by the participation of Nittetsu Curtain wall Corporation and Nittetsu Sash Sales Corporation in December. |
| May | Dai-ichi Mokko Co., Ltd. (now Bright Home Corporation) joins the Group. | |
| August | Toyo Sash Co., Ltd. listed on the Second Section of the Tokyo Stock Exchange. | |
| November | Housing equipment business commences. Meiwa Manufacturing Co., Ltd. and Meiwa Co., Ltd. join the Group. | |
| 1986 | October | Bathroom manufacturer, Sanyo Chemical Manufacturing Co., Ltd. joins the Group. Bathroom production commences. |
| 1987 | March | Toyo Sash Co., Ltd. moved to the First Section of the Tokyo Stock Exchange. |
| 1988 | June | Overseas production commences with the completion of Thai plant. |
| 1992 | July | Toyo Sash Co., Ltd. renamed as Tostem Corporation. |
| 2000 | October | Shutter business for commercial buildings commences. Suzuki Shutter Manufacturing Co., Ltd. (now Tostem Suzuki Shutter Mfg. Co., Ltd.) becomes wholly owned subsidiary of Tostem through a stock swap. Restructuring of Tostem Group commences. Toyo Exterior Co., Ltd. and Eyeful Home Technology Inc. becomes wholly owned subsidiary through a stock swap. |
| December | Land inspection company, Japan Home Shield Co., Ltd., becomes a subsidiary. | |
| 2001 | April | Tostem Viva Corporation merged with Tostem Corporation. |
| October | Name changed from Tostem Corporation to Tostem Inax Holding Corporation. At the same time, a new company called Tostem Corporation established through a corporate separation. All business transferred to this company and Tostem Inax Holding Corporation becomes a pure holding company. Management integrated with Inax Corporation through a stock swap. Inax Corporation becomes wholly owned subsidiary of Tostem Inax Holding Corporation. |
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| 2002 | January | Real estate franchise chain, Jyu-Tsu Corporation (now Jyu-Seikatsu Realty, Corp.) joins the Group. |
| June | The plant of Tostem Housing Products (Dalian) Co., Ltd. in Dalian, China, which produces wooden interior furnishings, completed. | |
| September | Advanced Housing Research Corporation established to enhance homebuilding franchise business. | |
| October | Tostem Inax Remodeling Corporation established by integrating commercial-building remodeling business within the Group. The plant of Shuzhou Inax Sanitary Ware Co., Ltd. in China, which produces sanitary earthenware, completed. |
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| 2003 | April | Nihon Kentetsu Engineering acquired and name changed to Tostem Kentetsu Corporation to strengthen sales to large-scale commercial buildings in the Tokyo metropolitan area. |
| 2004 | October | Tostem Inax Holding Corporation renamed as JS Group Corporation. |
| 2005 | January | Asahi Tostem Exterior Building Materials Co., Ltd. established through integration of the exterior wall materials businesses of Tostem Corporation and Asahi Glass Co., Ltd. |
| October | Nittan Company Limited joins the Group. |
| 1924 | Ina Seito Co., Ltd. established and production of tiles commences. |
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| 1945 | Production of sanitary ware commences. |
| 1967 | Production of bidet-equipped toilet seat "Shower toilet" commences. |
| 1968 | Production of unit bathrooms commences. |
| 1975 | Production of kitchen systems commences. |
| 1985 | Renamed Inax Corporation. |
| 1996 | Inax-Giang Vo Sanitary Ware Co., Ltd. (joint venture) established in Vietnam to produce sanitary ware. Suzhou Inax Sanitary Fitting Co.,Ltd. (joint venture) established in China to produce faucets. |
| 1998 | Suzhou Inax Building Materials Co., Ltd. (joint venture) established in China to produce tiles. |
| 2001 | Stock swap with Tostem Inax Holding Corporation. |
