The required documents for China business visa application is:
1.A valid passport as well as a copy of its information page: Your valid passport must have at least six (6) months of remaining validity and at least one blank visa page in it.
2.Application form: One completed Visa Application Form.
3.Photo: one recent photo of 2x2 square inch (black & white or color is acceptable) glued or stapled on the application form.
4. Original Visa Notice Form issued by authorized departments of Chinese Government
5. invitation letter from the host company/unit in China.