The double shaft shredder can meet the recycling of waste materials in various industries. It is suitable for materials that are difficult to be broken, such as waste TV sets, washing machines, refrigerator shells, waste tires, large pipes, pipe fittings, forklift pallets, various packaging barrels, waste automobile shells, aluminum alloys, engine shells, waste aluminum castings, copper and waste steel plates and scrap iron with a thickness of less than 10mm. There are a wide range of recyclable materials, The shredded materials can be directly recycled or further refined and crushed as required.