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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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