Tags Co.opmart Hong Ngu Saigon Co.op opens 3rd Co.opmart in Đồng Tháp Friday, Feb 02, 2018 Saigon Co.op, the owner of the Co.opmart supermarket chain, on February 2 opened Co.opmart Hong Ngu at the KII building in Hong Ngu town in Dong Thap Province, its third store in the province.