| 1691 | Began using
timber harvested in neighboring forestlands to fortify the Besshi
Copper Mine, where the Sumitomo family started mining operations. 。 |
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| 1894 | With the advocacy of Teigo
Iba, manager of the Besshi Copper Mine, prepared a forestation plan in the spirit of repaying for what had been reaped from the land. |
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| 1898 | Established the Forestry
Department within the Besshi Mining Plant and started the forestry business. |
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| 1942 | Started forestry business
on Sumatra, Borneo, and Java islands to develop resources in southern areas. |
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| 1948 | Divided into six companies
(including establishment of the foundations of the current Sumitomo Forestry) under the government’s zaibatsu* dissolution order. The six companies subsequently merged into two companies (Toho Norin and Shikoku Ringyo) through two mergers. *Zaibatsu: family-run conglomerate operating as an industrial group in Japan. |
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| 1955 | Toho Norin Co., Ltd. and
Shikoku Ringyo Co., Ltd. merged to form Sumitomo Forestry Co., Ltd., and established a nationwide network to procure and sell domestic timber. |
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| 1964 | Started the built-for-sale housing business. | ||||||
| 1970 | Established a joint venture,
P.T. Kutai Timber Indonesia (KTI), in Indonesia and launched a full-scale building materials business based on plywood manufacturing. |
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| 1975 | Started construction for
high-grade, custom-built housing. |
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| 1986 | Launched the full-scale
production of medium-density fiberboard (MDF) in New Zealand at a plant operated by joint-venture company, Nelson Pine Industries Ltd. (NPIL). |
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| 1990 | Gained listing of Sumitomo
Forestry stock on the First Section of the Tokyo Stock Exchange. |
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| 1991 | Established Tsukuba Research
Institute. Started Tropical Forest Regeneration Project in Indonesia. |
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| 1993 | Established the INOS Group,
a partnership of housing construction companies and builders, for the purposes of improving wooden housing construction productivity and the quality of wooden housing. |
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| 1997 | Inaugurated the Mt. Fuji
Manabi no Mori Project to regenerate the mountain’s natural forests, which were damaged by a typhoon. |
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| 1998 | Tsukuba Research Institute
developed a mass propagation method for Dipterocarp family trees through tissue culture. 。 |
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| 2001 | Established Sumitomo Forestry
Crest Co., Ltd. through the merger of Sumitomo Forestry Crex Co., Ltd., Sumirin Holz Co., Ltd., Sumirin Plywood Industries, Ltd., and Fuji Incombustible Building Materials Industry Co., Ltd. |
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| 2002 | Started providing customers
of Sumitomo Forestry’s Home with our Long Support System, which includes sixty years of after-sales service. |
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| 2003 | Started selling built-for-sale housing in Seattle, U.S.A. | ||||||
| 2004 | Invested in residential housing construction companies in China. Entered the Chinese housing market. |
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| 2005 | Developed Japan’s first “Big-frame Configuration” (wooden beam Rahmen structure). | ||||||
| 2006 | Merged with Ataka Kenzai Co., Ltd. Entered the custom-built detached housing business in South Korea. |
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| 2007 | Formulated “Project SPEED”Long - Term Management Plan. |

