青云翻译

The first ship in the traction motor and motor development of frequency conversion motor,

First research on the traction motor and the motor variable-frequency adjustable-speed motor,

The lead in tows the electrical machinery and on the ships electrical machinery develops the frequency conversion velocity modulation electrical machinery,

Lead in the traction motor and of the ship motor developed on frequency control, electric co. , ltd.

First research on the traction motor and the motor variable-frequency adjustable-speed motor,