[Class : 37] Installation And Repair Services; Maintenance Services; Installation, Supervision, Maintenance, Cleaning, Restoration, Configuration And Repair Of Electric And Electronic Products, Fans, Ceiling Fans, Ventilating Fans, Ventilating Exhaust Fans, Installation, Maintenance And Repair Of Household Apparatus And Appliances; Repair And Maintenance Of Cooling Appliances And Installations, Installation Of Ventilation And Air Conditioning Systems.