[Class : 37] Repair And Maintenance Of Pollution Control Equipment And Providing Information Relating Thereto; Installation Of Dust Extraction Apparatus; Repair And Maintenance Of Dust Extraction Apparatus; Routine Servicing Of Dust Extraction Apparatus; Repair And Maintenance Of Dust Extraction Apparatus; Installation Of Ventilation And Dust Extraction Systems; Acoustic Ceiling Cleaning; Construction, Installation, Maintenance, Repair, Cleaning, Rental And Leasing Of Dehumidification In The Construction Industry, Air Compressors And Air Compressed Machines, Air Pumps, Vacuum Pumps, Air Blowers, Air Filters And Air Fresheners And Apparatus, Alternators, Pressure Regulators And Oil Separators, Air Conditioning Apparatus, Air Reheaters, Heating, Ventilating, Refrigerating, Ventilating, Temperature Control, Dust Extracting, Products For Sanitary Purposes And Air Conditioning Systems; Air Duct Cleaning Services, Refurbishment Of Air Conditioning Plant, Water Damage Restoration Services, Equipment Preservation, Concrete And Pop Drying Through Dehumidifiers, Performance Of Dehumidifying And Drying Processes In Buildings And Buildings Under Construction.