AC Power Frequency Converter the alternating current in the mains through AC→DC→AC, and the output is a pure sine wave, and the output frequency and voltage are adjustable within a certain range. It is different from the variable frequency speed control controller used for motor speed regulation.   PLACE OF ORIGIN Anhui, China SHIPPING METHOD Express, Land Freight, Sea Freight, Air Freight PORT Shanghai, Shenzhen, Guangzhou, Yiwu, Qingdao, etc.   QUALITY 1-100 ≥100 Est. Time 7 To be negotiated