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Electric fans; ventilation installations, namely, ventilating fans for commercial and industrial use; turbine ventilators, ventilating fans for industrial purposes, ventilating exhaust fans, energy recovery ventilators for the use in the mobility industry, ventilation installations in the nature of ventilating fans for cooling of systems for frequency and transformators in the railway industry, cooling ventilation for motors in the nature of ventilating fans for motors and exhaust ventilators in the nature of ventilating exhaust fans for street cleaning vehicles; ventilation installations in the nature of ventilating fans for industrial purposes for the use the use in the food industry, ventilators for filter systems, exhaust ventilation being ventilating exhaust fans for industrial purposes, ventilators for pneumatic machines used for conveying of grains, ventilators for drying processes in the nature of ventilators for industrial purposes; heat recovery apparatus in the nature of heat recovery ventilators and replacement structural parts therefore; all the aforesaid goods of Swiss origin