1. Typically, when the roller is inserted into the frame, it is generally not removed at will. However, to extend the service life of the roller, the scientific method is to drain the oil or water inside the roller, then introduce anti-rust oil, and when in use, drain the oil again for cleaning and deoiling before using it normally.

2. Preheat or cool the roller before use; adjust the roller to a slow rotation; this helps prevent uneven cooling or heating due to its own weight, which can cause deformation; it is a method to extend the service life of the roller.

3. When removing the roller from the frame, the internal water should be removed first; then apply rust-preventive oil or grease to the roller surface. Afterward, wrap it with PVC protective packaging and finally encase it in soft packaging materials. This method is beneficial in preventing the supermirror roller surface from reacting chemically with acidic or alkaline gases in the air, which can reduce surface brightness; in severe cases, it may necessitate roller repair, resulting in losses.