Hanoi promotes using QR codes for farm produce to help consumers quickly trace the origin of the products. "Businesses and cooperatives using QR codes have helped them and consumers to prevent unknown-origin foods on the domestic market," Hang said. "Labelled agricultural products under safe production chains are sold at 10 to 30 percent higher prices than trad it ional products. "IT application in production and consumption has also gradually improved the capacity of cooperatives and enterprises in terms of production and supply of products, according to Hang. The cooperative has supplied 3 tonnes of vegetables daily to many supermarket systems such as Big C and T-mart, large hospitals, and schools.