PREEN

AC power supply apparatus, namely, voltage stabilizing power supply; DC power supply apparatus comprised of rectifiers that convert alternating current to direct current and voltage converters; power supply apparatus, namely, AC simulation test power supply for inverter; smart grid simulator for simulating electric power grids comprised of computer hardware, computer software, and a computer monitor; and constant current AC power supply apparatus, namely, high-frequency switching power supply

Consulting services in the fields of energy-saving technologies and methods and industrial design services