Inside the slide rail, which cannot be seen by the naked eye, is its bearing structure, which is directly related to its bearing capacity. There are both steel ball slides and silicon wheel slides on the market. The former automatically removes dust and dirt on the slide rail through the rolling of the steel balls, thereby ensuring the cleanness of the slide rail and preventing the sliding function from being affected by the dirt entering the interior. At the same time, the steel balls can spread the force to all sides, ensuring the stability of the drawer horizontally and vertically. The debris generated by the silicon wheel slide rail during long-term use and friction is snow flake, and it can also be brought up by rolling, which will not affect the sliding freedom of the drawer.