North Office: 92 Kham Thien Street, Kham Thien Ward, Dong Da District, Hanoi
Phone Number: (024) 73 077 889

South Office: 132 Truong Cong Dinh Street, Ward 14, Tan Binh District, HCMC
Phone Number: (028) 73 057 057

Hotline: 1900 636 135 (9:00 - 21:00)
Email: support@okxe.vn
website: https://www.okxe.vn