The Thailand Business visa is usually valid for three months from date issued, for a stay up to 90 days.
The Non-immigrant/business visa is used for short term business visitors, attending conferences, sales and marketing etc.
Business visitors requiring more than one entry should apply for the multiple entries visa.
If a multiple entries visa is required, a request should be made in both the invitation from the Thai host company and in the Company letter of financial support.
Nationalities and passport holders of the following 13 countries: Nigeria, Central African Republic, Cameroon, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Guinea, Ghana, Liberia, São Tomé and Príncipe, Sierra Leone, Somalia and Sudan. Applicants from the listed countries must apply in person only, and present original resident alien card or US visa.
For Nigerian nationalities and passport holders, Certificate of Clearance from NDLEA and authenticated by The Ministry of Foreign Affair of Nigeria and Royal Thai Embassy in Abuja, Nigeria.