Inverters; AC/DC inverters; Control units for regulating start-up electrical motors; Drive invertors; Electric relays; Electric sensors; Electrical components in the nature of electric contactors; Electronic apparatus and instruments for controlling, adjusting and testing of drives and motors; Electronic frequency converters for high velocity electro motors; Electronic servo motor controllers; Frequency converters; Photovoltaic inverters; Power inverters; Programmable logic controller (PLC)