Inside the slide rail that is invisible to the naked eye, it is its bearing structure, which is directly related to its load-bearing capacity. At present, there are steel ball slides, roller slides and silicon wheel slides. The former automatically removes dust and dirt on the slide rails by rolling the steel balls, thereby ensuring that the slide rails are clean and does not affect the sliding function due to the dirt entering the interior. At the same time, the steel ball can spread the force around, 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-like, and can be brought up by rolling, which also does not affect the sliding of the drawer.