If the hinge is the heart of the cabinet, then the rail is the kidney. Whether the large and small drawers can be freely and smoothly pushed and pulled, and the weight is supported by the support of the slide rails. From the current technology point of view, the bottom slide rail is better than the side slide rail, and the overall connection with the drawer is better than the three-point connection. The materials, principles, structures and processes of the drawer slides vary widely. The high-quality slide rails have low resistance, long service life and smooth drawers.