1) Microwave oven use: This product is a synthetic resin product. When used in a microwave oven, it can only be used for short-time heating. In addition, foods with a large amount of oil and sugar may deform the cup when the temperature rises rapidly. Do not use it. Do not get close to the fire source to avoid melting deformation 2) Washing method: The heat-resistant temperature of the product is about 100 degrees. Do not exceed 20 to 30 minutes for sterilization and disinfection at a high temperature of about 77 degrees, and it is better to place the product on top of the indirectly heated. Do not use iron brushes or abrasive powder when washing by hand.   3) When hot water is installed, the cover may leak due to air expansion. Therefore, when installing hot water, do not cover the cover immediately.