How long does it take to get a Saipan visa?

On June 28th, 2009, Saipan officially belonged to the federal government of the United States, and China citizens enjoyed a 45-day visa-free entry policy. So you don't need an American visa to go to Saipan.

As long as the passport is valid for more than half a year from the date of returning to China and you carry a round-trip ticket, you can go through customs normally.

Second, or need to apply for EVUS:

Applicants who hold a valid visa B 10 for the United States1B2 have not done EVUS for two years and need to do it before departure.

The registration information page is as follows: www.evus.gov.