Rotary converters; Inverters; Converters, electric; AC-DC power converters; Frequency converters; Electrical power conversion equipment, namely, electronic power converters; Current rectifiers; Electrical power distribution units; Electric voltage transformers; Solar batteries; Solar panels for the production of electricity; Solar modules for production of electricity; Fuel cells; Batteries and cells; Accumulators in the nature of batteries; Wattmeters; Ammeters; Voltmeters; Electric wires an...