GB 11677-1989 "Hygienic Standard for Water-based Modified Epoxy Coatings on the Inner Wall of Cans" stipulates the hygiene requirements for water-based modified epoxy coatings used on the inner wall of beverage cans. The standard aims to ensure that the coating will not cause harm to food safety during contact with beverages. It specifies the composition of the coating, hygiene detection methods and related restrictions, including the control of harmful substances such as heavy metals and volatile matter. Through strict hygiene standards for the coating, it is ensured that the coating does not produce harmful substances during the use of the inner wall of the tank, so as to ensure the mass of beverage products and the health and safety of consumers.