HA NOI HEAD OFFICE: 111 Mai Hac De St., Hai Ba Trung Dist.

Tel: (84-4) 3.976.0144

HO CHI MINH CITY BRANCH:  1st Floor, 60 Nguyen Đinh Chieu St.,1 Dist

Tel: (08)73.000.478

Email: qsystems@hn.vnn.vn