how much for one year working visa?

Warsi, a work Z type costs 4982 rupees. And it is just valid for 3 months and the stay duration is 30 days. After you enter PRC, you need to apply for a residence permit within 30 days and a one-year residence permit costs CNY 400.
The required documents for work Z type can be shown as follows:
1. The completed application form with a recently-taken passport-sized color photo attached
2. Your passport and copy of its data page
3. Alien employment permit and invitation letter from a duly authorized unit, and your employer will get you the two documents.
When your employer applies for the alien employment permit, your education certificate will be required, so I’m afraid the bachelor degrees are needed.