DQS Certification LTD Address: Zoom 101, Nha C22, Mai Dong Street, Mai Dong Ward, Hoang Mai District, Ha Noi City Enterprise code: 0107332953 Phone: 02439333786 Representative: Dinh Tan Anh Adress: No 101 C22, Tap The Mai Dong, Mai Dong Ward, Hoang Mai District, Ha Noi City Mai Dong Ward, Hoang Mai District, Ha Noi CityFounding date: 24 - 2 - 2016