exhaust air ventilation system handling unit shopping mall ahu exterior building pipe |
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| navigate by keyword : abstract ahu air architecture background building circulation clean closeup commercial concept construction distribution duct ducting dust engineering equipment exhaust exterior flow galvanized handing handling heading hvac industrial industry mall metal pipe polluted pollution protection restaurant sheet shopping stainless steel structure supply system thailand tube unit vacuum vent ventilation wall |
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| Exhaust air ventilation system. Air Handling Unit. Ventilation system of shopping mall. AHU. Exterior building pipe. Exhaust air system for clean and flow in building. Air pollution, PM 2.5 concept |
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