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2018.12.13
Experimental Demonstration of Low Velocity Bu…
2018.9.6
(日本語) 大橋社長が北日本新聞『けさの人』に掲載
2018.4.27
Otaka Started Its Business in Myanmar
2018.4.9
(日本語) 水熱源ヒートポンプ空調のページを追加しました
2017.9.28
Received Commendation from Ministry of Land I…
2017.9.6
Renewed Homepage
2017.7.26
Excellent Construction on Award 20th July,201…
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2019.01.18
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