Breaking the law. According to the query on Hualv.com, it is illegal to use the number one number multiple times. One box of health products corresponds to a registration number. Multiple use of one number refers to illegally marking the product label with words, trademarks, logos other than the health product registration and filing information, or applying the special health product registration certificate number or the general health product registration number in other ways. This behavior will cause fake and shoddy products to flow into the consumer market, harming consumers' legitimate rights and interests and health, so it is illegal.