A valid visa is required, obtainable at Vietnamese embassies and consulates abroad (see addresses section). Business visas can be applied for through a Vietnamese sponsoring agency, valid for up to six months and allowing multiple entries. The one-month visa fees are US$25 for single entry & transit visas, US$10 for extension of single entry visa, US$40-100 for multiple entry and US$16 for extension of multiple entry visa. This information should be checked prior to travel. Original passport and two two-inch photos are needed for visa application. Allow four working days to process.