How long is the validity of the "Foreigner Work Permit"? Do I need to charge for changing my certificate?

Q: How long is the validity of the "Foreigner Work Permit"? Do I need to charge for changing my certificate? A: According to the criteria for foreigners to work in China, the validity period of work permits approved by local management departments varies. Generally, Class B talents are signed once a year, renewal upon expiration. If the visa expires and needs to be extended, the Entry and Exit Administration will have corresponding visa fees.