Selenium-enriched water cups have not been used for some time, so long as they are not damaged, they can continue to be used.

Selenium ore is added in the production process of selenium-enriched water cup to make it rich in selenium. This kind of cup can eliminate acidic metabolites in the body and is beneficial to health. But if you don't use it for a long time, it may affect the integrity of the cup, so you need to check the integrity of the cup before using it.

Please make sure that your selenium-enriched water cup is genuine to fully protect your health.