There is an invitation to participate in the exhibition. What materials do you need to prepare for a US business visa?

There is basically no difficulty if there is an invitation letter.

1. valid passport: B 1/B2 The passport of the visa applicant must be valid for at least six months longer than the expected stay in the United States. If you expect that your passport will be valid for less than six months when you leave the United States, or your passport is damaged, or there is no blank visa issuance page on your passport, please apply for a new passport before coming for an interview.

2. A photo: a 5cm×5cm color front photo taken within 6 months. Please stick the photo on the English application form DS- 156, and don't use staples. Please see the photo requirements for details.

3. Original visa application fee receipt You can pay the visa application fee in 780 yuan RMB at any branch of CITIC Industrial Bank in China. Please note that once the application fee is paid, even if the applicant is refused or abandoned, it cannot be refunded. Applicants must present two original application fee receipts when submitting visa applications. Only visa applicants who meet the guarantee requirements of A- 1, A-2, G- 1, G-2, G-3, G-4, C-3, NATO and the United States can be exempted from paying the application fee.

4. Complete DS- 156 non-immigrant visa application form (all non-immigrant visa applicants must fill in).

5. Fill in the complete supplementary information form of non-immigrant visa DS- 157 (16-year-old non-immigrant visa applicants must fill in).