The Kedeyou stapler adopts the principle of lever mechanism and has a chain rod transmission mechanism, which cleverly realizes loading in place and pressure transmission. Compared with traditional staplers, the Kedeyou labor-saving stapler has been scientifically developed and uniquely designed to reduce pressure concentration and achieve an obvious effect of saving 70% of the pressing force. This mechanical structure was developed by engineers. Carefully designed, and the results of multiple tests, it is also included in the protected patented design structure. The excellent labor-saving series of products can basically be easily bound with one finger, binding 30 pages at a time, and will not cause hand fatigue when used for a long time.