9 DC power supplies; AC power supplies; uninterruptible electrical power supplies; high frequency switching power supplies; power inverters; AC adapters; DC adapters; power adapters; DC/DC converters; charging stations for electric vehicles and hybrid vehicles; apparatus for supplying electricity from electric vehicles, namely, electric power converters, DC/AC power converters, power adapters, power-supply connectors and adapters for use with portable electronic device; apparatus for supplying electricity from hybrid drones, namely, electric power converters, DC/AC power converters, power adapters, power-supply connectors and adapters for use with portable electronic device; rotary converters; batteries and component parts, namely, vent caps; fuel cells and structural parts therefor; fuel cell generators in the nature of fuel cells and structural parts therefor; electric or magnetic meters and testers, namely, electric meters, electrical outlet tester, pulse generators for testing electric current, for measuring and testing magnetic fields, for measuring and testing outlets, in the nature of circuit testers, phase indicators; telecommunication machines and apparatus, namely, telecommunication cables, telecommunication base stations, portable telecommunication instant messaging devices, telecommunication multiplexers, telecommunication transmitters, telecommunication switches; electronic control apparatus, namely, vehicle control apparatus, fuel pump controller, engine control unit, voltage controller, current control devices, voltage variable frequency controller, inverter control devices, converter control devices; battery charging devices for electric vehicles and their fittings in the nature of connector, charging cable, plug; solenoid valves, namely, control valves for regulating the flow of gases; measuring or testing machines and instruments, namely, gravity measuring instruments, radiation-measuring instruments, screw-thread measuring machines and instruments, gas testing instruments, diesel-engine exhaust test instruments, coordinate measuring machines, level measuring machines, cement testing machines, textile testing machines, metal strength testing machines; sensors to detect the revolving angles of throttle valves specifically for automobiles; sensors to detect the revolving angles of accelerators specifically for automobiles; throttle opening degree sensors; solenoid valves