D

Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, DC power supply devices

[ Business and commercial services, in the nature of retail store services, mail order catalog services, wholesale distributorship services and business advice, all relating to the trading of electronic devices in the field of power electronics ]

[ Research and development of apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, DC power supply devices ]