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Variable frequency inverter (AC motor speed drive, VFD) manufacturer & supplier in China
![Frequency inverter drive for hoister and crane](http://www.acdrive-china.com/image/frequency inverter for hoister and crane.jpg)
In mine production, the essential equipment, mine hoister & crane, includes shaft and incline hoists which is treated as the "throat" of the mine. It is responsible for putting down and up of ore, barren rocks, equipment, materials and labors.
![Variable frequency inverter for injection molding machine](http://www.acdrive-china.com/image/special frequency inverter for injection molding machine.jpg)
The injection molding enters a new historic rapid developed period due to the fast development in plastic industry. Through multi-aspect research and analysis in injection molding technology, our company developed the special frequency inverters for the injection machines.
![Variable frequency converter for pumps](http://www.acdrive-china.com/image/variable frequency converter for pumps.jpg)
This AC drive can drag a maximum 4 units AC motors(2 units for cycle start) without water supply controller/card, use one PID regulator to control the pumps through the feedback by pressure sensor, while a single one variable frequency pump can't control the flow range precisely. It offers excellent control solution and drive for customers in water supply and HVAC industries.