1. To see the production date of Huang Daoyi, you need to first look at the outer packaging of Huang Daoyi Active Oil. The image of Huang Daoyi and the Huang Daoyi trademark can be clearly seen on the outer packaging film.

2. Then find the expiration date mark of Huang Daoyi. The expiration date is xxxx, and you can know the production date of Huang Daoyi.