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| Soma No.1 Aero-Engine Works | | TEL:+81-244-37-3712 FAX:+81-244-37-3731 | | Production items | : | Parts of jet engines, gas turbines and space development equipment | | Employees | : | 194 | | Site Area | : | 159,200 m2 |
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| Soma No.2 Aero-Engine Works | | TEL:+81-244-37-3712 FAX:+81-244-37-3431 | | Production items | : | Parts of jet engines, gas turbines and space development equipment | | Employees | : | 494 | | Site Area | : | 167,300 m2 |
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| Sunamachi Works | | TEL:+81-3-3644-1111 FAX:+81-3-3644-1929 | | Production items | : | Steel structure, Industrial machinery | | Employees | : | 120 | | Site Area | : | 181,221 m2 |
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| Mizuho Aero-Engine Plant | | TEL:+81-42-568-7000 FAX:+81-42-568-7012 | | Production items | : | Assembly and overhauling of jet engines, gas turbines and space development equipment | | Employees | : | 1,224 | | Site Area | : | 160,000 m2 |
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| Yokohama Nuclear & Chemical Components Works | | TEL:+81-45-759-2704 FAX:+81-45-759-1788 | | Production items | : | Reactor pressure vessels, containment vessels, heat exchangers for nuclear power plants and reactors and towers for chemical plants | | Employees | : | 230 | | Site Area | : | 113,800 m2 |
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| Yokohama Machinery Works | | TEL:+81-45-759-2410 FAX:+81-45-759-2411 | | Production items | : | Rolling mills, presses, plastic machinery, pump and rotating machinery | | Employees | : | 211 | | Site Area | : | 112,900 m2 |
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| Aichi Works | | TEL:+81-562-31-8000 FAX:+81-562-31-8010 | | Production items | : | Bridges, deck machinery, steel structures and shield tunneling machines | | Employees | : | 555 | | Site Area | : | 733,800 m2 |
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| Aioi Works | | TEL:+81-791-24-2206 FAX:+81-791-24-2268 | | Production items | : | Boilers, pressure vessels for chemical plants and prefabricated piping systems | | Employees | : | 432 | | Site Area | : | 254,934 m2 |
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| Aioi Casting Workshop | | TEL:+81-791-24-2701 | | Production items | : | Casting products for machinery | | Employees | : | 37 | | Site Area | : | 22,900 m2 |
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| Kure Aero-Engine & Turbo Machinery Plant | | TEL:+81-823-26-2312 FAX:+81-823-26-2158 | | Production items | : | Parts of gas turbine power plants, jet engines and gas turbines | | Employees | : | 925 | | Site Area | : | 370,700 m2 |
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