CHENGDU, Nov. 20 (Xinhua) -- Pigs in southwest China from Friday began having two identity chips fixed on their back legs detailing where they were butchered, examined and sold.

    Forty-five markets in downtown Chengdu, capital of Sichuan Province, have started to sell pork with ID chips, said a spokesman with the city's food and drug administration on Friday.

    Two plastic rings containing the chips with information on where the pig was bred are fixed around the pig's hinder limbs before it is sold to a slaughterhouse.

    Additional information is added to the chips as the pig gets slaughtered, inspected and sold to the end market.

    The chip is scanned when each piece of pork is sold so that the customer can have a receipt with a code that links to an entry that records the slaughter, inspection and sale of the pork in a city dat...

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