The system will allow products to be traced back to the producer, and will provide detailed information regarding place and time food is grown, fertilizer--if any—used, and when it is applied, and other pertinent data. Pork is currently sold using a source-tracing system, and a milk source-tracing system is being developed. Currently, 300 machines in supermarkets allow "consumers to check the Quality Standards Certification of products on sale and report unlicensed products."
Source: www.shanghaidaily.com