Li Aiyun (front), a resident of Tianzhen Township, works in a cucumber greenhouse in Gaoqing County, east China's Shandong Province, Dec. 6, 2017. Quality tracing system was introduced to Gaoqing County with vegetable having its own QR code which contains basic information for customers to scan.(Xinhua/Zhu Zheng)
Quality tracing system introduced in E China
Source:Xinhua| 2017-12-06 17:00:10|Editor: Mengjie
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KEY WORDS: QR
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