Top Page > Corporate Profile > History
| December 1940 | Established as Hokkai Canning and Drying Co., Ltd. |
|---|---|
| May 1949 | Changed trade name to Toyo Wood Products Co., Ltd. and commenced the manufacture and sale of wooden boxes for canned goods (inauguration of the business) |
| January 1956 | Inaugurated Otaru Paper Container Works and commenced the manufacture and sales of Corrugated Packaging boxes |
| May 1959 | Inaugurated Yokohama Works |
| August 1961 | Inaugurated Sapporo Works and closed Otaru Paper Container Works |
| February 1962 | Inaugurated Osaka Works |
| August 1963 | Transferred head office functions to Tokyo |
| March 1965 | Inaugurated Komaki Works |
| May 1968 | Inaugurated Niigata Works |
| July 1968 | Inaugurated Yamagata Works |
| November 1970 | Inaugurated Kyushu Works |
| January 1971 | Changed trade name to Tomoku Co., Ltd. |
| Inaugurated Iwatsuki Works and Central Research Laboratory | |
| April 1974 | Listed on the 2nd Section of the Tokyo Stock Exchange and the Sapporo Stock Exchange |
| August 1974 | Inaugurated Sendai Works |
| September 1979 | Inaugurated Hamamatsu Works |
| February 1981 | Listed on the 1st Section of the Tokyo Stock Exchange |
| Inaugurated Tatebayashi Works | |
| April 1981 | Inaugurated Shimizu Works |
| February 1984 | Established SwedenHouse Co., Ltd. (Consolidated subsidiary) |
| September 1985 | Purchased Aomori Danboru Co., Ltd. and Inaugurated Aomori Works |
| February 1986 | Acquired Hokuyo Koeki Co., Ltd. as a consolidated subsidiary through the acquisition of shares |
| September 1986 | Inaugurated Printing Works |
| November 1987 | Transferred head office to Tokyo and changed the account settlement period (new period ending on the last day of March) |
| October 1990 | Established Southland Box Company as a consolidated subsidiary in Los Angeles, California, U.S.A. |
| May 1991 | Established Tomoku Hus AB as a consolidated subsidiary in Insjon, Sweden |
| February 1995 | Relocated Sapporo Works |
| April 1995 | Formed Tohun Service Co., Ltd. as a consolidated subsidiary through the merging of Toyo Transportation and Warehousing Co., Ltd., Toyo Transportation Co., Ltd., Iwatsuki, Toyo Transportation Co., Ltd., Yokohama, and Kiyama Transportation Co., Ltd. |
| April 1998 | Purchased folding carton business from Kyoshinsha Co., Ltd. and inaugurated Chiba Folding Carton Works |
| May 2000 | Acquired Sendai Shiki Kogyo Co., Ltd. as a consolidated subsidiary through the acquisition of shares. |
| January 2003 | Capital participation in Nichiei Shiko Co., Ltd. |
| March 2004 | Purchased Nisshin Shiko Co., Ltd. |
| January 2006 | Inaugurated Atsugi Works |
| Established Ota Danboru Co.,Ltd.(Consolidated subsidiary) | |
| February 2006 | Commercial and Insurance sectors of Hokuyo Koeki Co., Ltd., transfer to Hokuyo Co., Ltd. |
| March 2006 | Sweden House Co.,Ltd. acquired Hokuyo Co., Ltd. as a company subsidiary |
| January 2009 | Business restructuring for Sweden House Co., Ltd. and Hokuyo Koeki Co., Ltd. (Business activities at Sweden Hills were merged into Sweden House Co., Ltd.) |
| February 2009 | Changed trade name to Sweden Hills Golf Club from Green Hill Country Club. |
| April 2009 | Extended 3rd finishing area at Tatebayashi Works |
| March 2011 | Sendai Works and Sendai Shiki Kogyo were affected by the Great East Japan Earthquake |
| Developed and installed the world-fastest corrugator at Tatebayashi Works | |
| April 2011 | Extended the finishing area at Niigata Works |
| September 2011 | Sweden House Service Co., Ltd. and Yamazen Traffic Co., Ltd. became consolidated subsidiaries |
| March 2012 | Acquired Daiichi Container Co., Ltd. as a consolidated subsidiary through the acquisition of shares |
| December 2012 | Acquired Prime Truss Co., Ltd. as a consolidated subsidiary through the acquisition of shares |
| March 2013 | Acquired Sweden House Co., Ltd. as a fully consolidated subsidiary |
| April 2013 | Established Tomoku Vietnam Co., Ltd. |
| Sweden House Service Co., Ltd. changed trade name to Sweden House Reform Co., Ltd. | |
| March 2015 | Inaugurated Kobe Works |
| October 2015 | Established Tohun Logitem Co.,Ltd. |
| March 2016 | Inaugurated Nagano Works |
| April 2016 | Tohun Logitem Co.,Ltd. became a consolidated subsidiary |
| August 2016 | Acquired Tohun Service Co.,Ltd. as a fully consolidated subsidiary |
| April 2017 | Tomoku Vietnam Co.,Ltd. became a consolidated subsidiary |
| April 2018 | Yamazen Traffic Co.,Ltd. changed trade name to Tohun Traffic Co.,Ltd. |
| October 2018 | Acquired Enshu Kami Kogyo Co.,Ltd. as a wholly owned subsidiary |
| January 2019 | Taiyo Co.,Ltd. as a fully consolidated subsidiary |
| January 2021 |
Notice to change the trade names of consolidated subsidiaries Tohun Service Co.,Ltd. → Tohun Co.,Ltd. Tohun Ryutsu Service Co.,Ltd.(Hokkaido) → Sapporo Tohun Co.,Ltd. Tohun Ryutsu Service Co.,Ltd.(Chubu Region) → Chubu Tohun Co.,Ltd. B-Staff Co.,Ltd. → Sendai Tohun Co.,Ltd. |
| March 2021 | Tamazen Co.,Ltd. as a fully consolidated subsidiary |
| July 2021 | Hoju Unyu Co.,Ltd. ,Kansai Hoju Unyu Co.,Ltd. and Kanto Hoju Unyu Co.,Ltd. became subsidiaries of Tohun Co.,Ltd. |
| October 2022 | Tohun Traffic Co., Ltd. absorbed Kanto Hoju Unyu Co., Ltd., and changed trade name to Kanto Tohun Co.,Ltd. |
| April 2023 | Cosmos Kogyo Co.,Ltd. as a wholly owned subsidiary. |
| September 2023 | Khang Thanh Manufacturing CO., LTD. (VIETNAM) as a wholly owned subsidiary. |
| April 2024 | Daiwadanboru Co.,Ltd. as a wholly owned subsidiary. |
| September 2025 | Kuniyoshi Co.,Ltd. as a wholly owned subsidiary. |
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