1. temu products containing button batteries should be marked "Contains button batteries".

2. This is because button batteries are a special type of battery. They are small in size and button-shaped. They are easy to be swallowed or misused, and there are certain safety risks. Therefore, according to relevant laws and regulations and standards, products containing button batteries need to be marked to remind consumers to pay attention to safety.

3. The marking of products containing button batteries can include text descriptions, icons or labels, so that consumers can clearly know that the products contain button batteries when purchasing, so as to take corresponding safety measures. In addition, consumers should also pay attention to follow the relevant safety guidelines during use to avoid unnecessary safety risks.