Anti-counterfeiting code: first find the QR code of sk2 package, then scan the anti-counterfeiting code with mobile phone, uc or other browsers, and then wait quietly for a while, and the detailed results will be displayed. If the number of queries exceeds 1, smear it carefully.
Bar code: first find the bar code of the outer package, then open the scanning function of WeChat, Alipay or browser, scan the bar code, wait for a few seconds, and the query result will appear. If you can't find the product details, buy carefully, and beware of manufacturers posing as barcodes.
You can search in search engines such as Baidu or 360, national 3 15 product anti-counterfeiting inquiry center, and then enter the webpage to find the bar code information inquiry function, and then enter the bar code. After confirmation, click the query button and wait for the query result. If the product information is not available or there is a problem, smear it carefully.