Long Thi Hoang Yen Address: No 140, Le Loi Street, Khu Thong Nhat Ii, Dong Mo Town, Chi Lang District, Lang Son Province Enterprise code: 8730041821 Phone: 02378007464 Representative: Long Thi Hoang Yen Dong Mo Town, Chi Lang District, Lang Son ProvinceFounding date: 14 - 1 - 2022