| 1949 |
|
The OKAMOTO store started by Shigeo Okamoto as a private management. |
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It is inaugurated as a selective selling store of present TAIYO NiPPON SANSO CORP. |
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started sales O2,C2H2,GAS MACHINE TOOL, WELDING MATERIAL, INDUSTRIAL MEDICINE |
| 1950 |
|
An organazation changed into OKAMOTO store for diversification. |
| |
|
The capital had increased to 350,000 yen. |
| 1958 |
|
The capital had increased to 700,000 yen. |
| 1960 |
|
The capital had increased to 1,500,000 yen. |
| 1961 |
|
The Mizushima office was established in Kurashiki-city. |
| |
|
The capital had increased to 3,000,000 yen. |
| 1962 |
|
The capital had increased to 6,000,000 yen. |
| 1964 |
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The Fukuyama office was established in Fukuyama-city. |
| 1965 |
|
The capital had increased to 9,000,000 yen. |
| 1967 |
|
The capital had increased to 12,000,000 yen. |
| 1968 |
|
The capital had increased to 15,000,000 yen. |
| 1969 |
|
The Nissin office was established in Nissin Steal. |
| 1970 |
|
Hiroshima Nihon Sanso financed. |
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The capital had increased to 20,000,000 yen. |
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Hiroshima office was established in Hiroshima-city. |
| 1972 |
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70% of stocks acquired from Kure nihon Sanso, and management right is acquired. |
| 1973 |
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company name has changed OKAMOTO STORE to OKAMOTO INDUSTRIES. |
| 1974 |
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The capital had increased to 25,000,000 yen. |
| 1975 |
|
The capital had increased to 30,000,000 yen. |
| 1977 |
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The capital had increased to 33,000,000 yen. |
| |
|
Head office had moved to Showa-town in Kure |
| 1978 |
|
The capital had increased to 35,000,000 yen. |
| 1981 |
|
The capital had increased to 42,000,000 yen. |
| 1985 |
|
East Hiroshima office was established. |
| 1987 |
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「 SENSUI 」 opened as an eating and drinking section next to the head office. |
| 1990 |
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East Hiroshima office had moved to Industrial complex |
| 1995 |
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The Hiroshima office had unified to the Higashi-Hiroshima office. |
| 2001 |
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The Kure Nihon Sanso had unified to the OKAMOTO INDUSTRIES. |
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The capital had increased to 47,100,000 yen. |
| 2003 |
|
Nissin office had unified to the head office. |
| 2009 |
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The Eva detached office had promoted to the Eva office. |
| 2011 |
|
Kure office was established in head office. |
| 2013 |
|
International Trading Division was established at head office. |
| 2017 |
|
The representitive office has established in Makati city of the Philippine Metro Manila |