What materials do you need to prepare for a US business visa?

The materials required to apply for a US visa are: 1. Passport. If it is more than half a year before the expected return date, the last page of the passport must be signed by myself; 2. Photos, square color photos with white background within 6 months, measuring 2 inches by 2 inches; 3. If the visa applicant has an exit record, he/she must provide photos taken in the country where he/she has been; 4. Copy of each page of ID card, work permit, marriage certificate and family household registration book.

Legal objectivity:

People's Republic of China (PRC) Exit and Entry Administration Law

Article 9

China citizens shall apply for passports or other travel documents when leaving or entering the country.

China citizens who want to go to other countries or regions also need to obtain visas or other entry permits. However, unless the China government has signed visa exemption agreements with other governments or the Ministry of Public Security and the Ministry of Foreign Affairs provide otherwise.

China citizens who leave or enter the country as seafarers and work on foreign ships shall apply for a seaman's certificate according to law.