How big is the card bag for putting the health code?

It is 8.5 cm long and 5.4 cm wide. Nucleic acid code is a two-dimensional code used for large-scale nucleic acid sampling and registration during the epidemic, which can be used repeatedly with screenshots, and has the characteristics of high efficiency, convenience and accurate information. The size of the nucleic acid code put into the card sleeve is 8.5 cm long and 5.4 cm wide. The nucleic acid code can be used offline, and the screenshot can be reused within 30 days.