Powerful motor, high power Pure copper coil, long life, good stability, high efficiency, energy saving, low noise, strong power Low dust, uniform particles, alloy steel blades are extremely sharp It is made of alloy steel, sharpened and sharpened, and can be sharpened many times after being blunt, and is durable Strong, silent, thickened, double-layer sheet production Thickened double-layer steel plate production, double-layer mute, greatly reducing noise trouble