Mitsubashi Industrial Co., Ltd.

1930: Mitsubashi Taijiro started a lumber business in Zōgyūnai, Horokainai Town, Ryu-gun, Hokkaido

1950: Mitsubashi Wood Industry Co., Ltd. reorganized with capital 20 million yen; moved headquarters to Shigami-nai, Horokainai Town; began civil engineering contracting in addition to lumber business

1967: Acquired Tokodashi Wood Industry Co., Ltd. in Fukagawa City; started production of hardwood lumber with 7 million yen capital

1969: Established Horokainai Wood Industry Co., Ltd. in Horokainai Town with 8 million yen capital; produced hardwood lumber and opened a petroleum station

1971: Established Sanwa Co., Ltd. in Shibetsu City with 30 million yen capital; began production of softwood lumber

1972: Opened Osaka branch in Osaka City

1973: Moved headquarters to Minamimachi, Shibetsu City; opened Shibetsu plant; started production of hardwood lumber; established Sanmei Co., Ltd. in Shibetsu City with 48 million yen capital; produced floor plywood, structural plywood, and solid plywood; began domestic sales and exports

1974: Acquired Chiba Forestry Co., Ltd. in Minami-Furano Town; renamed to Minami-Furano Wood Industry; capital 20 million yen; started production of softwood lumber and forest product manufacturing; opened a chip plant in Horokainai Wood Industry in Shima, Furano City; established Sankyo Heavy Machinery Co., Ltd. in Shibetsu City with 80 million yen capital; began repair and sale of vehicles and heavy machinery

1975: Mitsubashi Wood Industry Co., Ltd. increased capital to 50 million yen

1977: After the death of Mitsubashi Taijiro, Mitsubashi Sadahiro became president of Mitsubashi Wood Industry Co., Ltd.

1979: Acquired Shibetsu Chip Industry Co., Ltd. in Kenbune Town; acquired Asahi Shin Sangyo Co., Ltd. in Ishikari Town, Ishikari District; capital 15 million yen; started production of hardwood lumber and chip plant, and forest product manufacturing

1981: Participated in capital of Jinoori Industry Co., Ltd. in Fuchu City, Hiroshima Prefecture; capital 48 million yen; sold furniture lumber as part of Mitsubashi Industrial Group (disbanded 2006); moved Shibetsu Chip Industry Co., Ltd. from Kenbune Town to Noinokofu Village, Nakagawa District; renamed to Tokiwaki Wood Industry Co., Ltd.; capital 48 million yen

1982: Acquired Taisei Industry Co., Ltd. in Tomakomai City; capital 30 million yen; started production of furniture wood, laminated timber, and FJ lumber; established Horokainai Town Forest Promotion Public Corporation as a joint venture with Horokainai Town and Mitsubashi Wood Industry Co., Ltd.; capital 38 million yen; started production of hardwood lumber (disbanded 2003); moved registered headquarters to 4765, Ameyamane, Horokainai Town; moved Mitsubashi Wood Industry Co., Ltd. Shigami-nai chip plant to Horokainai Town; continued chip production

1986: Opened Asahikawa branch in Etsuyama Town, Asahikawa City

1987: Company name changed to Mitsubashi Sangyo Co., Ltd.

1989: Kariya Wood Industry Co., Ltd. joined Daisei Sangyo Co., Ltd. as a capital partner, increasing the new capital to 48 million yen: Kyushu branch opened in Okawa City, Fukuoka Prefecture: Acquired Hokkaido Dairy Wood Industry Co., Ltd. in Shimokawa Town, Kamikawa District, Hokkaido, with a capital of 48 million yen: Started production of conifer lumber: Madozaki Wood Industry Co., Ltd. moved from Fukagawa City to Horo Kainai Town: Company name changed to Hokkaido Oak Co., Ltd. Continued production of hardwood lumber (dissolved in 2003).

1992: Hokkaido Dairy Wood Industry Co., Ltd. absorbed and merged with Tokiwaki Wood Industry Co., Ltd., changing the company name to Hokuto Mitsubashi Co., Ltd.: Hokkaido Dairy Wood Industry Co., Ltd. became Hokuto Mitsubashi Shimokawa Factory, Tokiwaki Wood Industry Co., Ltd. became Hokuto Mitsubashi Onikifuru Factory, continuing production of conifer lumber and chips: New capital of 96 million yen.

1994: Mitsubashi Sadahiro received the Forestry Merit Award at the 45th Hokkaido Forestry Annual Conference.

1995: Horo Kainai Wood Industry Co., Ltd. and Asahi Shin Sangyo Co., Ltd. merged, new capital of 56.62 million yen: Opened Sapporo branch in Ishikari City: Opened pre-cut factory.

1997: Opened panel factory in Ishikari City.

1998: Opened housing department in Sapporo City.

2003: Divided civil engineering and construction division from Mitsubashi Sangyo Co., Ltd.: Established Mitsubashi Construction Co., Ltd. with a capital of 50 million yen.

2004: Mitsubashi Oh became president and CEO.

2007: Mitsubashi Sangyo Co., Ltd. merged with Mita Co., Ltd., Hokuto Mitsubashi Co., Ltd., and Sanmei Co., Ltd.: Moved Mitsubashi Sangyo Co., Ltd. Asahikawa branch from 3-8 Eryu 3-chome to 2-9 Eryu North 2-chome.

2009: Moved Mitsubashi Sangyo Co., Ltd. Kyushu sales office from Yanagawa City to Saga City.

2013: Updated building and machinery at Horo Kainai factory of Mitsubashi Sangyo Co., Ltd.

2019: Updated machinery at Onikifuru factory.

2020: Received the Hokkaido Industry Contribution Award (Forest Creation Merit).

2021: Introduced new plywood and insulation processing machinery at Sapporo branch: Awarded Greenery Merit by the Tohoku & Hokkaido Green Promotion Council.

Established chip yard at conifer factory of Mitsubashi Sangyo Co., Ltd.: Opened finger-joint factory with Hokuto Housing System Cooperative.

Updated building and machinery at Furano factory of Mitsubashi Sangyo Co., Ltd.: Received Greenery Merit (National Land Green Promotion Organization Chairman Award).

Mitsubashi Oh became chairman of the Hokkaido Wood Industry Cooperative Federation: Updated biomass boiler and added dryer at Hokuto Housing System Cooperative.