Transformers, Frequency Inverter, Voltage Stabilizer manufacturer / supplier in China, offering Vector Overload VFD Three-Phase Single-Phase Frequency Converter Speed Regulator, AC Contactor LC1d09m7c 12 18 25 32 40 Coil Contactor AC220V Product Type Contactors, AC 220V Contactors Gmd/Gmc-9/12/18/22/32 and so on.