SMART Visa Unit
One Stop Service Center for Visa and Work Permit (OSS)
18th Floor, Chamchuri Square Building, Chamchuri Square Building, Phayathai Road, Pathumwan, Bangkok 10330
Tel: 02 209 1100 ext. 1109-1110
Fax: 02 209 1199
E-mail: smartvisa@boi.go.th