Do I need to hand in the original health certificate when I work in Shanghai KFC? Can I hand in a copy? I have other uses for the original.

No, this is the requirement of the health and epidemic prevention station for the company. The company needs to file the original health certificate, so the company will keep the original employees. After working for a certain number of hours, the money can be reimbursed, and the medical examination can be reimbursed every year. If your original work has other uses and you still need this job, then you can only do another one!