Measuring, signalling, and checking apparatus and instruments, namely, an electronic train control system used in the railway industry for detecting and controlling trains, ground faults, broken rails, power failures, track switches and lights; electronic recorders for storing and archiving information related to power system faults; microprocessors being computer hardware; portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; automated process control system, namely, micro-processor based hardware and software used to monitor the status of industrial processes, namely power generation, electrical distribution and oil and gas processing; apparatus and instruments for conducting, switching, transforming, accumulating, regulating, controlling or monitoring electricity, namely, adapters, automatic electrical distribution apparatus, distribution transformers, electric distribution boxes and consoles, electrical power distribution blocks, electrical controllers, inverters, converters, current rectifiers, electric current switches, electricity conduits, fuses for electric current, high-frequency switching power supplies, power-line transmission machines and apparatus, low pass inductor filter used in high power electrical applications, power amplifiers, power cables, power controllers, power distributing boxes, power line conditioners, electrical power supplies, power supply connectors and adaptors for use with portable electronic devices, power switches, power transformers for amplification, power wires, semiconductor power elements, voltage monitor modules, voltage regulators for electric power, voltage stabilizing power supply, voltmeters, automatic switching apparatus for telecommunications, change-over switches for telecommunication apparatus, computer hardware for telecommunications, electric capacitors for telecommunication apparatus, electric resistors for telecommunication apparatus, electrical transformers for telecommunication apparatus, electronic testing equipment, namely, telecommunication line integrity testing apparatus; fuel cells; electric storage batteries; batteries; battery chargers; battery charge devices; charging appliances for rechargeable equipment; apparatus for recording, transmission, and reproduction of sound and images; magnetic recording media in the nature of blank magnetic data carriers, blank sound recording and optical discs, blank floppy discs; fire extinguishers; memory cards and blank chip cards.

Repair of telecommunication machines and apparatus; repair of power distribution or control machines and apparatus; repair of measuring and testing machines and instruments; repair of integrated circuits manufacturing machines and systems; repair of computers.