Co Khi App Joint Stock Company Address: Hamlet 1, Van Trung Commune, Viet Yen District, Bac Giang Province Enterprise code: 2400803622 Phone: 0978224433 Representative: Bui Thi Hoang Yen Adress: Civil Group 23, Cluster 6, Ha Dinh Ward, Thanh Xuan District, Ha Noi City Van Trung Commune, Viet Yen District, Bac Giang ProvinceFounding date: 24 - 11 - 2016