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Company name
株式会社海山商会
Website
https://oxy-up.com/
https://umiyama.co.jp/
Start date
End date
Ticker
Listed market
Country
Japan
Business activities
解体事業部門（鉄筋コンクリート・鉄骨・木造・設備撤去工事）
Head office
鶴見
Chief executive
Capital
Employees (non-consolidated)
Employees (consolidated)
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National Tax Agency basic information
Data sources
https://umiyama.co.jp/about
News pages
Own domain
Last updated
2026-09-21 18:15 (Model: ggml-org/gpt-oss-20b )
Japan
