The Consulate General of Hungary in Ho Chi Minh City only represents Poland and Slovakia in the case of visa applications lasting no more than 90 days within any 180-day period.
The conditions for submitting the application are set out in Sections 1-5. can be found under menu items.
In addition to the above, please find information about the visa application procedure and supporting documents on the website of the embassies of Poland and Slovakia in Hanoi.
Embassy of Poland: https://www.gov.pl/web/vietnam
Embassy of Slovakia: https://www.mzv.sk/hanoj-en
We would like to draw your attention to the fact that in the case of the main purpose of entry and stay in Slovakia, the submission of an invitation letter from the Slovak police is a basic condition for submitting an application.