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ID&E Holdings was created as part of a company reorganisation in July 2023. It has numerous subsidiaries, the main ones including Nippon Koei Co Ltd, Nippon Koei Urban Space Co Ltd, Nippon Koei Energy
Solutions Co Ltd, Nippon Koei Business Partners Co Ltd, and British architectural firm
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38:(日本工営株式会社)) is a Japanese engineering consulting company, founded on 7 June 7, 1946, and headquartered in
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Construction and civil engineering companies based in Tokyo
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