About to know Z type visa

Shahriar, after you find a job, your employer will get you the invitation letter of a duly authorized unit and work permit within 15 days. The education and work experience certificate are needed when your employer apply for the two documents for you. And then along other documents, you can apply for the work Z type.
You can submit the application to the embassy of PRC by yourself or by agent.
The needed papers include your passport and its photocopy, the application form, a passport-sized color photo, the invitation letter of a duly authorized unit and work permit, Registration Certificate of the company and its Business License, as well as the medical report.