Tea candles are aluminum cans used in bars to pour wax, usually used for setting up tables on birthdays. The burning time varies from 1 to 3 hours, calculated based on weight. Because most bars, KTVs, and tea seats have wax, they are called tea candles. Tea wax: Suitable for home use, effectively removes formaldehyde and improves the home environment. The main effects of formaldehyde on human health are: abnormal smell, irritation, allergies, and immune dysfunction. Long term exposure to low doses of formaldehyde can cause chronic respiratory diseases, inhibit the repair of DNA damage, cause pharyngeal cancer, colon cancer, brain tumors, menstrual disorders, genetic mutations in the nucleus, and various types of female pregnancy syndrome. More seriously, it can also cause chromosomal abnormalities in newborns, leading to decreased memory and intelligence in adolescents, and triggering leukemia.