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Electrical apparatus, namely, electrical wires, electrical resistors, electrical resistance heating wires and electrical controllers therefor; electric resistances. Heating installations and components namely boilers; heating elements; heating elements for clothes dryers, hair dryers, stoves, heaters, toasters; cooking installations and components, namely cooking ovens, gas stoves, roasting spits for cooking ovens, ventilation hoods for stoves; cooling installations and components, namely cooling installations for water, air conditioning installations, air-conditioning apparatus, evaporative air coolers; drying installations and components, namely laundry drying machines, drying apparatus for chemical processing, drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems, hair dryer diffusers; ventilating installations and components namely ventilating fans for commercial and industrial use, ventilating exhaust fans, heat recovery ventilators, turbine ventilators, ventilating louvers. Conducting scientific feasibility studies, research, development and design of flexible production systems and control systems for plants, machines and components.