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          • ◎ 房屋設施維保
          • House facility maintenance
          • ◎ 高空管網清潔
          • High alttude pipeline network cleaning
          • ◎ 動力站運行維護
          • Power station operation maintenance
          • ◎ 配電站運行維護
          • Distribution station operation maintenance
          • ◎ 中央空調運行維護
          • Central air-conditioning operation maintenance
          • ◎ 環保系統維護
          • Environmental protection system maintenance
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