This standard specifies the dimensions, requirements, test methods, inspection rules and signs, Packaging, transportation and storage. This standard is applicable to the bottle caps used for sealing that the bottle mouth conforms to QB/T 3729. The bottle caps used for sealing containers made of other materials can be implemented by reference.
GB/T 13521-2016 Referenced Document
GB/T 191 Packaging.Pictorial marking for handling of goods