i want to visit china for business purposes

Basic documents are passport, application form, passport-sized photo; return tickets and hotel reservation. You need invitation or confirmation letter from an authorized government organization like the local foreign affairs office in China; Beside, for business purpose, an Invitation letter from your inviting Chinese organization; A recommendation letter from your local Chamber of Commerce & Industry or your company Registration Certificate (photocopy);
A supporting letter from your organization; Your tax certificate (photocopy); Your bank statement (personal or company). With all these documents, you can submit your application to Chinese embassy.