It is suitable for crushing and reusing various kinds of reverse materials, especially for all kinds of hard plastics (such as material heads, shoe materials, etc.). The NPCY series crusher is easy to operate and easy to change. The tool holder is optimized. The claw type knife can be dispersed and the force is increased. Each knife and shear force is increased, which is suitable for crushing thick materials, hard blocks, material heads, etc. It effectively improves the cutting force of the tool and reduces the wear of the tool. It is equipped with electric control according to the full design. The material head adopts double-layer structure and is filled with sound-proof material, which makes the equipment have good safety and environmental protection, saving electricity and durability.