| ■Lines of Business |
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| 【 Medium & Large Diameter Pipe Jacking Works 】 |
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Small Bore Pipe Jacking Works |
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High load bearing capacity pipe |
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Low load bearing capacity pipe |
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Steel pipe |
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Sewage Pipe Rehabilitation Works |
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Pit (shaft) Construction Works |
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Chemical Grouting Works |
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General Civil Works |
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Pavement Construction Works |
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Machine Rental Service |
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| ■Group Companies |
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Tohoku Rinkai Kogyo Co., Ltd. |
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Maruhachi Shoji Co., Ltd. |
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Higashi Nihon Tug Boat Co., Ltd. |
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Higashi Nihon Oil Terminal Co., Ltd. |
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Rintora Co., Ltd. |
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Hachinohe Kowan Kanren Kigyo Kanri Co., Ltd. |
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Hachinohe Rinko Services Co., Ltd. |
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Hakko Auto Co., Ltd. |
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Mutsu-ogawara Marine Services Co., Ltd. |
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Marutake Distribution Co., Ltd. |
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Kitanihon ‘Port Services Co., Ltd. |
