WING AIR CURTAINS

air-conditioning apparatus; air curtains, namely, hot and cold air blowers for room openings; air curtains in the nature of hot and cold air blowers used to create airstream for separation between external and internal climate environment in entrance or exit areas of buildings; air-conditioning, air cooling and ventilation apparatus and instruments; air purifying apparatus and machines; heating installations

installation, repair, restoration, maintenance of air conditioning and ventilating apparatus; installation, repair, restoration, maintenance of apparatus for heating, purifying and cooling air

conducting technical project studies in the field of air conditioning, ventilating, cooling and heating apparatus