· An undertaking letter from the foreign transport company or an invitation letter from the related organization in China is required for crew (C) visa application.

· Foreigners residing in China that are applying to extend their duration of stay must file their application at least 7 days prior to the expiry of the validity period on their visa.

· During the period when the applicant's passport (or other travel documents) is under legal custody of the exit-entry administration authorities for the issuance of a visa or residence permit, the applicant resides legally within the territory of China while bearing the receipt notice of the application herein.

· The exit-entry administration authorities hold the right to verify the purpose of application via interview, telephone inquiry or on-the-spot investigation.

· Decisions made by the exit-entry administration authorities on rejecting extension applications, visa re-issuing, foreigners' stay or residence permits, and duration of residence extensions shall be considered final. 

The right to interpret this notice resides with the Exit-Entry Administration Department of the Beijing Municipal Public Security Bureau.