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  • ◎ 房屋设施维保
  • House facility maintenance
  • ◎ 高空管网清洁
  • High alttude pipeline network cleaning
  • ◎ 动力站运行维护
  • Power station operation maintenance
  • ◎ 配电站运行维护
  • Distribution station operation maintenance
  • ◎ 中央空调运行维护
  • Central air-conditioning operation maintenance
  • ◎ 环保系统维护
  • Environmental protection system maintenance