India Visa :
Thailand Visa:
https://www.vfsglobal.com/Thailand/Bangladesh/index.html
Malaysia Visa:
https://www.kln.gov.my/web/bgd_dhaka
https://www.visasmalaysia.com/requirements/bangladesh/
China Visa:
http://bd.china-embassy.org/eng/lsyw/zjbl/
Singapore Visa: