Viet Trung Address: Civil Group 9, Song Ma Town, Song Ma District, Son La Province Enterprise code: 5500283972 Phone: 0212836104 Representative: Nguyen Manh Trung Adress: Civil Group 9, Song Ma Town, Song Ma District, Son La Province Song Ma Town, Song Ma District, Son La ProvinceFounding date: 20 - 4 - 2007