A consumer scans the quick response (QR) code for apples in a Carrefour supermarket in Luoyang, Central China's Henan Province Wednesday. QR codes are available for agricultural products such as apples, pears, and green beans sold at many of the chain's supermarkets nationwide. Consumers can scan the codes to get information about the products, including places of origin as well as names and certificates of planters. Photo: CFP