(LIU XIAO)

A buyer in Yan'an, Shaanxi Province, reads information about apples from Luochuan County of Shaanxi after scanning a QR code with a smartphone on November 19.

Each Luochuan apple is attached with a code, which can be scanned to give buyers detailed information covering the whole process of planting, packing and transportation.

Such practice has greatly boosted the sales volume of these apples.