Yang Sen's light fruit powder has no outer packaging and can be identified by WeChat official account. According to the relevant public information, during the upgrade of the anti-counterfeiting query background system of Jansen products, you can query the authenticity of products through Bellevue WeChat official account, open the anti-counterfeiting query interface under Bellevue WeChat official account, manually enter the complete anti-counterfeiting number of 16, and click Query to get the query result.