Electrical power supplies; uninterruptible electrical power supplies; parts and accessories for electrical power supplies, namely, inverters and converters for power supplies, electrical switches, and power supply connectors and adaptors; buffer (hold-up) modules for power supplies; buffer modules; voltage drop protection apparatus; voltage monitor modules; voltage monitoring units; voltage stabilizers power supplies; switching power supplies; parts and accessories for switching electrical power supplies, namely, inverters and converters for power supplies, electrical switches, and power supply connectors and adaptors; non-contact power supplies; parts and accessories for non-contact electrical power supplies, namely, inverters and converters for power supplies, electrical switches, and power supply connectors and electrical adaptors; bidirectional power converters; parts and accessories for bidirectional converters, namely, current converters, frequency converters, electronic controllers for use with power converters, electrical switches, connectors and adaptors for use with converters; DC/DC power converters; parts and accessories for DC/DC power converters, namely, current converters, frequency converters, electronic controllers for use with power converters, electrical switches, connectors and adaptors for use with converters; DC/AC inverters; parts and accessories for DC/AC power inverters, namely, current inverters, frequency inverters, rotary inverters, electronic controllers for use with power inverters, electrical switches, connectors and adaptors for use with inverters; power distribution or control machines and apparatus, namely, electrical power distribution blocks, electrical power distribution units, power distributing boxes, electrical power distribution panels, electrical controllers; rotary converters; phase modifiers; noise filter being an electronic component for electrical communication machines and instruments; noise filter being an electronic component for electronic machines and apparatus; parts and fittings for noise filter for electrical and electronic communication machines and instruments, namely, capacitors, connectors, noise filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers, and transistors; digital communication apparatus for electrical power supply, namely, digital receivers, transmitters and transceivers; power supply control machines and apparatus, namely, electrical power supplies and electrical controllers; digital control system for power supply, namely, electrical controllers and computer hardware used to control power supplies; electrical communication machines and instruments, namely, digital receivers, transmitters and transceivers; personal digital assistants; smartphones; recorded and downloadable computer software used to monitor, manage and control power supplies; recorded and downloadable computer software used to monitor, manage and control bidirectional power converters; recorded and downloadable computer software used to monitor, manage and control DC/DC converters; recorded and downloadable computer software used to monitor, manage and control DC/AC power inverters; electronic machines, apparatus and their parts, namely, digital controllers for electrical power supply; solar batteries; electric storage batteries for electrical power supply; electrical cells and batteries; electric or magnetic meters and testers; electric wires and cables; electronic publications, namely, downloadable electronic publications in the nature of books, magazines, newsletters and brochures in the fields of electrical power, electrical power distribution, and telecommunications