Sum Maintenance K.K LTD Address: No 27/2, Pham Van Hai Street, Tan Son Hoa Ward, Ho Chi Minh Town, Viet Nam, Ho Chi Minh City Enterprise code: 0319393563 Phone: 0919804146 Representative: Nguyen Thi Diem Huong Ho Chi Minh CityFounding date: 4 - 2 - 2026