How to apply for crowdsourcing health certificate?

The process of applying for a health certificate by the US group crowdsourcing riders: Although the situation of applying for a health certificate varies from place to place. But in general, it can be divided into two types: free handling and paid handling. Let me say it for free first: you need a work certificate in the catering industry, which can be a business license. As long as you can prove that you work there. Then, go to the hospital for a physical examination and follow the doctor's requirements, and you can successfully apply for a health certificate.