1、 Business travel visa: The valid period of the U.S. travel business visa is one year from the date of obtaining the visa, and it can be returned several times within one year.
2、 Student visa: Class F student visa is valid for one year.
3、 Work visa: The validity period of the work visa is generally 3 years, which can be extended once. The validity period of other seasonal labor visas depends on needs.
4、 Special talent visa: Class O visa is generally valid for one year and can be extended once a year.
Legal basis:
Article 5 of the Passport Law of the People's Republic of China, if a citizen goes abroad for non official reasons such as settling down in a foreign country, visiting relatives, studying, employment, travel, or engaging in business activities, he or she shall apply for a common passport in person to the exit and entry administration of the public security organ of the local people's government at or above the county level where his or her household registration is located.
