Labor arbitration requires the hospital to provide relevant certificates such as work-related injury identification and injury diagnosis, and it needs the hospital's seal to confirm. There are the following sealing methods:

1. Electronic seal: Now many hospitals have begun to use electronic seals. You can apply for an electronic seal at the front desk of the hospital or relevant departments, and then electronically stamp the documents that need to be stamped. 2. Handwritten seal: Some hospitals may not have electronic seals, so they need to be stamped with handwritten seals. In the application for labor arbitration, you need to find the official seal of the hospital on the certificate issued by the hospital, and then the hospital staff will sign and seal it to confirm the authenticity of the certificate.