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    3. The lower cage motors that are connected in series can raise and disperse the large material particles separated from the upper classifying room once again and further separate the qualified fine powder, and meanwhile ensure the uniformity of the vortex airflow inside the machine.
    4. The shaft of the classifier adopts the stepless speed control. The adjustment of fineness is convenient, sensitive and reliable, and the adjustment range is wide. 
    5. It has re-optimized the design of the classifying zone, enhanced the spatial range of the areas, and improved the classifying efficiency.
    6. Make use of a new high-efficiency and low-resistance whirlwind dust collector, and the resistance of the device is low and the dust collection efficiency is high.
    7. Optimize the design of the flexible cleaning devices and other anti-condensation devices inside the machine, so the anti-condensation effect is good.
    8. All wearing parts are all protected by the new multi-liner, which effectively extends the effects of the host.
    9. The rotation system uses the advanced dry oil workstation system, which is a successful solution to the problem of vulnerable bearing.
    10. Make use of statically determinate structure so that the host operates basically with no vibration; adopt the new anti-dust vibration attenuation fan, making the system vibration minimized.
    11. The large powder pipe and the small powder pipe both adopt dual interlocking air valve, which significantly lowers the air leakage rate of the system, thus overcoming the major defects of raising too many dusts in the operation of the previous classifiers.