1. Find the authenticity certification mark of the purchased goods, which has the official website for authenticity certification inquiry. Tear off the anti-counterfeiting mark, there is an anti-counterfeiting code under it. 2. General commodity information will have a corresponding verification address. After opening the website to be verified, enter the anti-counterfeiting code mark for query input. If it is genuine, it will be prompted as a green dialog box; If the product information is wrong, it will prompt that the product is not registered and should be fake or inferior. 1. Confirm. After purchasing goods, we must first confirm what type of anti-counterfeiting code we are purchasing, such as free 400 phone calls, website inquiries or SMS inquiries. Because different anti-counterfeiting codes have different query methods. 2. If it's 400 for free. Then, dial the phone directly and listen to the other party's prompt tone for inquiry. Generally, the inquirer will be asked to provide a series of figures provided by the other party on the goods, and the other party will tell you whether the goods you buy are genuine or fake according to those figures. 3. The same is true for online inquiry. You will get a website to check the anti-counterfeiting of goods. When surfing the internet, you can directly open the website and then enter a series of product serial numbers or a series of numbers on the goods. When it is genuine, it will prompt that it is correct, and when it is fake, it will prompt that the query is wrong. 4. The same is true for SMS query. There will be a number sent by SMS on the product. You can send a series of information about the goods to the designated SMS number, and the other party will automatically help you check the authenticity of the goods you bought. Then I'll text you back. In some supermarkets, there will be anti-counterfeiting bar code scanners. If you are afraid, you can also scan the goods you bought on that scanner to see if your goods are true or false. Of course, the scanner will also list your product information.