实施技术's pre-shredders are used extensively for municipal domestic waste (MSW), bulky waste and industrial hazardous waste recycling and have proven to be safe and efficient. Application The GC series shredder is a high-torque waste pre-processing equipment, applied to the first stage of the waste treatment process, suitable for pre-shredding thick or particularly bulky materials, such as household waste, bulky waste, construction waste, etc. The GC series pre-shredder uses the shearing and tearing principle to achieve material shredding, capable of powerfully shredding very coarse feed materials and preventing the accumulation of raw materials. Working Principle The pre-shredder uses a low speed, high torque double hydraulic motor to drive the cutter rolls directly. It uses the interaction between the cutters and the middle comb plate to shear, tear and pull the material, and is mostly used as the first step in the shredding process of various solid wastes. The pre-shredder is installed in front of the main shredder to help reduce and break up the material before it is fed into the main shredder. This helps to extend the life of the main shredder cutters and prevents non-shreddable and flammable materials from entering, while reducing peak power loads and keeping the line running smoothly. The pre-shredder also homogenises the feed and helps to control the feed rate to the main shredder, thereby increasing throughput and reducing unit processing costs.