I am a Nigerian businessman I wish to visit china for first time

Paul, you need the following documents:
1. An application form attaced with a recently-taken bare-headed photo.
2. A passport and a photocopy　of its data page.
3. The original and photocopy of the invitation letter from duly authorized unit.
4. An invitation letter from your trade partner in China.
5. A cover letter from your company.
6. A phtocopy of your company's business license.
7. A bank account statement. The balance should be more than four million naira.
8. Other documents required by the officer.