Địa chỉ: Số 31- Tô Ngọc Vân - Tây Hồ - Hà NộiTel : +84(4) 3944 9519 - 3944 9520  Fax: +84(4) 39449517  Website: http://crystalgroup.com.vnEmail: [email protected]   Hotline: 04 38 444444 Website: http://crystalgroup.com.vnEmail: [email protected]  - Hotline: 04 38 444444  Website: http://crystalgroup.com.vnEmail: [email protected] - Hotline: 04 38 444444

Headquarters: 63B To Hien Thanh, Hai Ba Trung district, Ha Noi. Head office: No.4, Blook 14B, Trung Hoa, Cau Giay Dist., Hanoi City Tel: + 84(4) 3944 9519 / 20 Fax: + 84(4) 3944 9517 Hotline: +84(4) 38 444 444