The scrap metal shredder is made of special alloy steel by special technology. With good wear resistance and high strength can be repaired and other features, driving some of the four drive, with heavy load planetary gear reducer transmission, spindle differential operation, electrical appliances some select PLC program and touch screen manipulation, with video surveillance system. It has the functions of automatic detection overload maintenance and so on. The equipment has many types, low speed, big torque and low noise. It is widely used in the shredding process in the recycling profession. With energy saving and environmental protection, stable function and high output power, it is a kind of equipment much liked by broad users. It is really useful to make use of the recycling of waste items, to turn waste into treasure, and to maintain a new way of wealth for the profession.