![Ryutaro Oishi](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Ryutaro Oishi was a Director, Executive Officer & Head-Technology at Oriental Shiraishi Corp.
| Companies | Position | End |
|---|---|---|
| ORIENTAL SHIRAISHI CORPORATION | Chief Tech/Sci/R&D Officer | - |
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Private companies
| Private companies | 1 |
|---|---|
Oriental Shiraishi Corp.
 Oriental Shiraishi Corp. Engineering & ConstructionIndustrial Services Constructs, manufactures and repair of concrete and construction work & sells construction materials | Industrial Services |
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