1. Look at the packaging of the original parts of the general standard of packaging, uniform standards, printing handwriting clear and formal, and counterfeit products packaging printing is relatively poor, often can easily find the flaw from the packaging;
2. See the color of some of the original accessories surface designated a certain color, if met other colors, is fake and shoddy parts;
3. Look at the appearance of the original accessories printed word or cast and mark clear and formal, while the appearance of counterfeit products rough;
4. Look at the paint illegal businessman will scrap parts by simple processing, such as demolition, loading, spelling, together, brush paint and other treatment, and then fake the sale of qualified goods, illegal access to high profits;
5. Look at the texture of the original accessories materials are according to the design requirements of qualified materials, counterfeit products are mostly using cheap and inferior materials substitute;
6. Look at the poor workmanship product appearance is sometimes good, but because the production process is poor, prone to cracks, sand holes, slag, burrs or scratches;
7. See "Storage" car accessories If the occurrence of chapped, oxidation, discoloration mirror or aging problems, may be in the storage environment, storage time, the reasons for the poor material itself;
8. See "Junction" if the clutch piece of rivet loose, brake skin pipe degumming, electrical parts joint off welding, paper filter seam off, and so on, it can not be used;
9. See the logo part of the regular parts marked with certain markings, such as the gear mark, piston top marks, such as the assembly mark, used to ensure the correct installation of the machine, no can not buy;
10. See the missing normal assembly components must be complete and intact to ensure smooth loading and normal operation. Some parts of the assembly of a small part of the leakage, generally "parallel", which caused difficulties in loading. Often due to the shortage of individual small parts, resulting in the entire assembly parts scrapped;
11. Look at the protective layer in order to facilitate the safekeeping, to prevent parts bump, the parts manufactured before the protection layer. For example, bushings, size of the bush, pistons, valves, etc. are generally protected with paraffin wax, so as to avoid its surface damage, these important accessories, the surface without protective layer, more "parallel";
12. See some important parts of the document, especially the Assembly class, such as carburetor, distributor, generator, etc., when the factory is generally accompanied by a manual, certification, to guide users to install, use and maintenance, without these many for fake products;
13. Look at the specifications to buy auto parts, to identify the main technical parameters, special technology to meet the use requirements. Some fake and shoddy products look similar to the real goods, but loaded up is not very suitable, or big point or small point, the use is always not satisfied with, and leave the accident hidden trouble.
14. The test report issued by the third party can not only prove the authenticity but also show its quality.