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MODERNER SFJ-400 Sanding, Dispersion, Stir Multi-purpose Machine (Variable Frequency Speed Regulation) for Chemical Laboratories
0~7500rpm
Frequency conversion speed regulation, with three functions of sand grinding, dispersion and Stir; low heat generation, five-point brush, multi-turn speed regulation knob; can display speed, speed range 0~7500rpm, 550W power.
If you don't know how to choose "Grinder", please consult customer service.