If the paint surface is polished with sandpaper and "coarse wax", it is difficult to make the car paint achieve a mirror effect. Therefore, the mirror treatment of automobile paint must use automobile paint care materials. At present, putty and polishing agent are generally used, and the best mirror effect material is polishing agent. In fact, polishing agent is also a kind of abrasive, which contains fine friction materials. The particle size or efficacy of polishing agents can be divided into three types: micro-polishing, medium polishing and deep polishing. Micro-polishing is used to remove extremely slight paint damage, generally referring to environmental pollution and acid erosion (bird droppings, fallen leaves, etc. ) just happened, but at present, for this slight damage, wax containing polishing agent can be used instead of micro-polishing; Middle throwing and deep throwing are mainly used to deal with different degrees of hair scratches. In addition, clear paint is better in middle throwing, while ordinary paint is faster in deep throwing. Generally speaking, as far as friction materials are concerned, polishing agent and reducing agent are the same kind of materials, but the main difference between them is that reducing agent contains polishing material (polishing agent or wax), while polishing agent does not contain polishing material. It is very important to have a glossy material to produce a "mirror effect" on the car paint surface. The main ways to improve the gloss of automobile paint surface and achieve "mirror effect" are: (1) removing small scratches with grinding and friction materials. (2) Depending on the efficacy of the wax, after polishing to a certain extent, the gloss of the wax makes up for the polishing defects. (3) Through chemical reaction, that is, by adjusting the rotating speed of the polishing machine, the polishing agent generates chemical reaction.