A shredder consists of a set of rotating blades, a paper comb and a drive motor. The paper is fed from the middle of the interlocking blades, and is divided into many small pieces of paper to achieve the purpose of confidentiality. The shredding method refers to the shape of the paper after being shredded by a shredder knife after being processed by a shredder. According to the composition of the shredder knife, the existing shredding methods include: shredded, segmented, foamed, striped, granular, filamentous, and the like. If it is a general office situation, you can choose granular, filamentous, segmented, and striped.