The rubber tooth zipper is composed of chain teeth, puller, limit code (front code and rear code) or locking parts. The chain tooth is the most key part, which directly determines the side pull strength of the zipper. Generally, the zipper has two chain belts, each chain belt has a row of chain teeth, and the two rows of chain teeth are staggered with each other. The puller clamps the chain teeth on both sides and slides with the help of the pull loop to make the chain teeth on both sides mesh or disengage from each other.