1. Look at the appearance of the original accessories, the appearance of printing or casting words and marks are clear and regular, and the appearance of counterfeit products is rough.

2. Look at the color of some original accessories surface designated a certain color, in case of other colors, it is counterfeit parts.

3. According to the quality, the materials of the original accessories are qualified materials according to the design requirements, and most of the counterfeit products are replaced by cheap and inferior materials.

4. The illegal paint dealers will simply process the waste parts, such as dismantling, assembling, assembling, assembling, painting, and so on, and then sell them as qualified products to illegally obtain high profits.

5. If the clutch plate rivets are loose, the brake hose is degummed, the electrical parts joint is desoldered, and the paper filter element joint is detached, it can not be used.

6. Look at the signs. Some regular parts are marked with some marks, such as gear marks, piston top marks and other assembly marks, which are used to ensure the correct installation of the machine parts. Those that are not available can not be purchased.

7. If there are problems such as cracking, oxidation, color changing mirror or aging of auto parts in "storage", it may be caused by poor environment, long storage time and poor materials.

8. Look at the packaging of the original accessories, the packaging is generally more standardized, unified standard specifications, clear and regular handwriting, and counterfeit product packaging printing is relatively poor, often can easily find flaws in the packaging.

9. Some important parts, especially assembly, such as carburetor, distributor, generator, etc., are usually provided with instructions and certificates when they leave the factory to guide users to install, use and maintain them. If not, most of them are counterfeit products.

10. Look at the protective layer. In order to facilitate storage and prevent parts from bumping, there is a protective layer before the parts leave the factory. For example, bushing, large and small bearing shells, pistons, valves, etc. are generally protected by paraffin wax to avoid surface damage. If there is no protective layer on the surface of these important accessories, they are mostly "parallel goods".

11. The normal assembly parts must be complete and in good condition, so as to ensure the smooth operation of the vehicle. Some small parts on some assembly parts are missing, which is usually "parallel goods", which makes it difficult to load. Due to the shortage of some small parts, the whole assembly parts are scrapped.

12. When choosing auto parts according to the specifications, it is necessary to find out the main technical parameters, and the special technology should meet the use requirements. Some fake and shoddy products have the same appearance as the real ones, but they are not suitable to be installed. They are either larger or smaller. They are not satisfied with the use and leave hidden dangers.

13. Although the appearance of the products is good sometimes due to poor workmanship, cracks, sand holes, slag inclusion, burr or bruise are easy to appear. For example, the cylinder gasket is extruded and deformed, which is easy to cause leakage, air leakage and water leakage due to loose sealing during use; the working surface of piston and piston ring has burr, which is easy to pull the cylinder.