How to choose a paper shredder that suits you can refer to the following seven characteristics to choose and buy: paper shredding effect, paper shredding capacity, paper shredding speed, shredder box volume and other characteristics. Paper shredding method: The paper shredder is composed of a set of rotating blades, paper combs and drive motors. The paper is fed in between the biting 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 the shredder after being processed by the shredder; the shredding capacity: the thickness of the paper that can be processed at one time and the maximum number of sheets; the shredding effect refers to the paper after being processed by the shredder The size of the waste paper formed is generally measured in millimeters (mm). Granules and foam have the best effect.