Welltek Systems Engineering Viet Nam LTD Address: No 20, T579C Town, Hao Nam Street, O Cho Dua Ward, Dong Da District, Ha Noi City Enterprise code: 0102567768 Phone: 0245378216 Representative: Wang Shih Cheng Adress: 278/32 To Hien Thanh, Ward 15, District 10, Ho Chi Minh City O Cho Dua Ward, Dong Da District, Ha Noi CityFounding date: 19 - 12 - 2007