Our products are made of food-grade stainless steel, processed with precision forging technology, resulting in a smooth and corrosion-resistant surface. If minor rust spots appear, it is mostly due to water stains or the adhesion of acidic substances. Simply wipe with a soft cloth dampened with a neutral detergent to restore its shine; this does not affect normal use.

The rainbow-like discoloration is a physical phenomenon caused by the oxidation layer of the metal and light refraction at high temperatures, and is considered normal. It can be removed by gently wiping with white vinegar or a special stainless steel cleaner, and does not affect the product's performance or safety.

We recommend regularly soaking and cleaning with citric acid or food-grade descaling agent, and avoiding using hard objects such as steel wool. Our products have undergone high-temperature and durability tests; proper cleaning can extend the product's lifespan and maintain its steaming performance.