Dear Sir,Please email f visa form i have invitation for coaltrans 2012 in Beijing .

You can just dowload the form at the bottom of this page https://www.travelchinaguide.com/embassy/visa.htm

For a China business visa, you need to prepare the documents below:
1. Duly completed Visa Application Form (can be downloaded from this website), affix one recent color photo (30mm X 40mm).
2. Original passport with a validity of more than 6 months and minimum 2 blank visa pages, and photocopies of the first 2 pages
(personal information) of your passport and recent Chinese visas if any.
3. If it is your first visit to China, you should provide your local police character/clearance certificate.
4. Invitation Letter of Duly Authorized Unit or Confirmation Letter of Invitation from an authorized government organization like the local foreign affairs office.
5. A recommendation letter from your local Chamber of Commerce & Industry or your company Registration
Certificate (photocopy)
6. A supporting letter from your organization
7. Your bank statement (personal or company);
8. If it is your first visit to China, your round-trip air tickets and hotel booking.