1.     Resin sand fuselage  ，The fuselage is higher, thicker and stronger 

Ⅰ. HT250 castings are first annealed at 700-800 degrees, then subjected to vibration aging, followed by the first rough machining and the second finishing treatment. The wall thickness is uniform, the surface of the product is smooth, free of sand holes, cracks, pinholes and other defects, and the dimensional accuracy is high. The good surface makes the electroplated coating have good combination, fine adhesion, uniform color, and excellent corrosion resistance.

Ii. The clay sand casting is easy to produce casting defects, resulting in the formation of many sand holes, impurities, pinholes and cracks on the surface, poor dimensional accuracy, shrinkage porosity, and easy appearance deformation after a long time.

2.     The cutter bed cuts down through the copper slider ，Longer life and higher precision

Single hydraulic system normally the knife bed cut down through swing rod , Easy to wear, short service life, 

3.     Hydraulic clutch : Double hydraulic: it is hydraulic clutch (through the hydraulic cylinder)drive the worm wheel , let the knife bed to cut .. more stable power output .. And The double  hydraulic paper cutter has greater cutting force, and has obvious advantages when cutting objects with higher density. The clutch is not easy to slip, and the clutch clearance does not need to be adjusted frequently.

  Single hydraulic is electromagnetic clutch , The brake is driven by the electromagnetic clutch. The brake has requirements on the voltage. The voltage directly affects the braking force and cutting force. And each 4-6 month should replace the carbon brush .. Brake pads are easy to wear

4.     working principle 

       5.     Electronic knife lock ：improve safety and efficiency .. When the machine electrical equipment fails, the electronic knife lock will lock the knife to prevent cut .

6.     Imported electrical appliances