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The cantilever electric mixer is suitable for mixing and stirring low, medium, and high viscosity liquids in the laboratory. The mixing machine adopts high-quality engineering plastic as the body, and the operating state is stable. The output end is equipped with a variable speed power amplifier to increase the output torque exponentially. The operating speed can be set arbitrarily according to the experimental needs, and the digital display of the stirring speed is intuitive, ensuring data collection. It has features such as built-in soft start, automatic overload protection, and constant power compensation.