Company ID: 0107755067
International Tour Operator Licence: 01-064 / 2017 / TCDL - GP LHQT
Office: 11th Floor, Building A, Sails Tower, Ha Dong, Hanoi
Website: www.gstravel.vn 
Email: dos@gstravel.vn / info@gstravel.vn
Hotline/Viber/WhatsApp: (+84) 776250570
Online support: Skype: gso.giang