the requirements for business visa
A. The original passport with at least six-month validity and two blank visa pages, one photocopy of the passport page containing the personal particulars.

B. Truly completed and signed Visa Application Form of the People's Republic of China. One recent passport-photo size color photograph of the applicant.

C. Visa Notification Form issued by the authorized government departments/companies/units in China, or formal Invitation Letter issued by renowned and creditable companies/units in China.

D. Visa recommendation letter from the applicant's employing company, organization, etc.

E. Other additional documents required according to the merits of each applicant, e.g. bank statements, round-trip air tickets booking, etc.

the duration of business visa is generally 30 days.