For product authenticity determination, you can apply to the Quality Supervision Bureau and the Industry and Commerce Bureau, and for food products, apply to the Food and Drug Administration. These departments will also entrust the original manufacturer to determine whether it is true or false. There may be some costs that you have to bear, and if the product is deemed to be a counterfeit, the seller of the counterfeit product will bear it.

Legal basis: Article 57 of the "Trademark Law of the People's Republic of China": Seven types of infringement of the exclusive right to register a trademark: 1. Without the permission of the trademark registrant, infringement of the exclusive rights of registered trademarks in the same category Use a trademark that is the same as its registered trademark on goods; 2. Use a trademark that is similar to its registered trademark on the same kind of goods without the permission of the trademark registrant, or use a trademark that is the same or similar to its registered trademark on similar goods. Causing confusion; 3. Selling goods that infringe the exclusive rights of registered trademarks; 4. Forging or manufacturing registered trademarks of others without authorization or selling forged or unauthorized registered trademarks; 5. Changing the registration of a trademark without the consent of the trademark registrant Trademark and put the goods with the replaced trademark into the market; 6. Deliberately facilitate the infringement of other people's exclusive rights to trademarks and help others to infringe the exclusive rights of trademarks; 7. Cause other damage to others' exclusive rights to registered trademarks .