A：1. Aged eighteen or over, in good health, no criminal record, has certain employer,has essential professional skills on a certain job or has related and adaptive knowledge skills; 2. The work in accordance with China's economic and social development needs,as a professional who in urgent need in China;3.As otherwise provided by laws and regulations on foreigners working in China, those provisions shall be followed.

A：If foreigners only change the working company, but still in the same occupation,and work visa in the period of validity,can apply for transfering work visa in China. Before the application, the original company should cancel its work permit,and need the cancellation certificate offered by goverment, then it is ok to apply for work visa transfer

A：The documents needed are not complete, or docments are not meet the requirements, or officers thought your documents are false; Applicant doesn't meets the requirements of foreigners working in China,having a bad record;The inaugural company is not strong enough, etc.

A：Apply to the Government 30 days before the expiry date of the work visa, but not earlier than 90 days before the expiration of the validity period.

A：When the applicant's name, passport, position, company name, address, etc. changed, need to change the work visa according.