1. Different uses: the red health certificate refers to the occupational health certificate, which is mainly used for specific occupational groups to prove the health status in a specific occupational environment. Holders of red health certificates should have regular occupational health examinations to ensure that their health meets relevant occupational health standards. Blue health certificate refers to food hygiene health certificate, which is mainly used in food-related industries, such as catering and food processing. Blue health certificate holders should receive food hygiene training and assessment to ensure that they have the health quality and knowledge to engage in related work.
2. Different issuing institutions: The red health certificate is issued by the labor and social security department or relevant occupational health management institutions, mainly those related to occupational health. The blue health certificate is issued by the health department or the relevant food regulatory agencies, mainly for departments and institutions related to food hygiene and food safety.