Which papers I need to get work visa to China

You need to provide copy of your passport, proof of your work experience and education certificate, your resume, and health certificate for your employer. After that, your employer will get you the alien employment permit and the invitation letter of a duly authorized unit.

Afterwards, you can prepare the required documents including your passport and copy of its data page, the completed application form attached with a passport-style photo, the alien employment and the invitation of a duly authorized unit. And then submit the application to the embassy fo PRC to apply for the work Z type.