这里汇总了申请者们最经常遇到的问题和困难，并由专家进行解答。希望您可以在这里得到想要的答案！
rt 谢谢！
2楼：
NO.
EVUS is the online system used by Chinese passports holders with 10-year B1/B2, B1 or B2 (visitor) visas to update basic biographic information to facilitate their travel to the United States. EVUS enrollments are valid for two years or until the traveler obtains a new passport or visa, whichever comes first.
3楼：
谢谢你的回答。
