1. Check whether the product name, capacity, caliber, manufacturer's name and address, adopted standard number, usage method and precautions are marked on the product.
2. Confirm that the anti-counterfeiting label on the product is intact, then scrape the label lightly, and enter the 22-digit anti-counterfeiting code to Sinoe official website for inquiry. If the query result shows "The first query is not your own", please use it with caution.
In addition, when buying a thermos cup, the lower part of the vacuum thermos cup should be cool, and the depth of the inner container and the height of the outer shell should be basically the same. Generally, the difference of 16 ~ 18 mm is within the normal range. It should also be noted that in order to cut corners and make up for the lack of material weight, some manufacturers add substances such as sand and cement blocks to the cups, which will affect the performance and experience of the thermos cups, so they need to choose carefully when purchasing.