New York: Letter from US based employer or sponsoring company, on company letterhead, which must introduce the applicant, indicate the applicant’s employment status/position held in the company, and clearly state the purpose of visit to China.  

The business cover letter must also indicate financial responsibility for the applicant, provide detailed contact information in host country, and specify the number of entries (single, double or multiple) and visa validity 3 month, 6 month, 1 year, 10 year) being requested.