Advantages: maintenance free, low failure rate, little interference to radio equipment, large output torque, high speed, longer
service time, suitable for high-precision equipment and electrical appliances. Mainly suitable for indoor electricity: hospitals,hotels, Internet cafes, KTV places, hotel buildings, villas, companies, farms, etc. (recommended reason: the starting and
operating voltage is very stable, maintenance free, and is very suitable for precision equipment, such as computers, USB, medical
equipment, etc.)