├ Bathrooms, bathtubs, washrooms
      │ ├ Tubs and bathtubs
      │ ├ system bus
      │ ├ prefabricated bath
      │ ├ jet bath
      │ ├ Shower unit
      │ ├ Shower and bath faucets
      │ ├ Bathroom lights, lighting
      │ ├ Bathroom ventilation fan
      │ ├ Bathroom TV
      │ ├ Bathroom doors and panels
      │ ├ bathroom tile
      │ ├ Bathroom storage shelves
      │ ├ Washstands, Vanity tops
      │ ├ Washbasin mirrors, bath mirrors
      │ ├ Bathroom Faucet
      │ ├ washbasin
      │ ├ Washroom storage
      │ ├ washing machine pan
      │ ├ Bathroom dryer, heating dryer
      │ ├ Laundry drainage trap
      │ └ Bathroom doors and panels
      └ Air Conditioning
         └ ventilation fan
            └ Bathroom ventilation fan
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