* the shape of the main body is like a drop of water, inside which there are two rotaries that are rotating in the same direction. The speed of the hammers attached to the rotary can be as fast as **0 meters per second, which will let most of the powder after the materials being grinded go through the sieve easily, hence the sieve will not keep the heat inside the main body to keep it inside a relatively suitable working temperature.

* the design of the door system and device(adjustable pressing-sieve, bevel upper door) will make the replacement of the sieve easily.

* the operation door adopts the sealing of air bag, which can perform better sealing;

* there is welding of protogenous tungsten carbide to the working points of the hammers, which makes higher efficiency and more durable;

* the gap between the sieve and hammers is adjustable, to be accorded with different materials that may contain more moisture or fiber;

* the rotor is imported from the west and made by the most esteemed and reputable factories. It is safe and efficient;

* it optimizes the design of powder-discharging system, and taking advantage of the principle of aerodynamics, to let he powder go through the sieve more easily;

* full-open type operation door, and safe inter-lock device, to make sure the safety and convenience of opening and closing door;

* there is air-intake device on the end of pin roll, to prevent the abrasion to the end of the pin roll of the hammers by the materials;

* there is impeller feeding device which is equipped with adjustable speed of rotating, ***0 Gaussian plus magnetic plate to clear the iron impurities, hence protect the parts of the grinding machine. The magnetic door device can automatically clear the iron impurities;