Yen Trung Address: No 53/87 Tam Trinh, Mai Dong Ward, Hoang Mai District, Ha Noi City Enterprise code: 0102147587 Phone: 0246367229 Representative: Hoang Thi Yen Adress: No 29 Vu Trong Phung, Thanh Xuan Trung Ward, Thanh Xuan District, Ha Noi City Mai Dong Ward, Hoang Mai District, Ha Noi CityFounding date: 25 - 1 - 2007