Siontech Joint Stock Company Address: 04 Chu Van An, Binh Hien Ward, Hai Chau District, Da Nang City Enterprise code: 0401666566 Phone: 0905015169 Representative: Pham Dong Trieu Adress: 363 Le Duan, Tan Chinh Ward, Thanh Khe District, Da Nang City Binh Hien Ward, Hai Chau District, Da Nang CityFounding date: 10 - 3 - 2015