SOURCE / INDUSTRIES By Ma Jingjing Published: Dec 30, 2020 11:39 PM A supermarket salesperson puts a QR code on a box of black tiger shrimps imported from Thailand on Thursday in Wuhan, Central China's Hubei Province. This was the first code generated in the province's tracking platform for imported cold-chain food, a system to guarantee traceability of such food in case of coronavirus contamination. Photo: cnsphoto Central China's Henan Province issued an emergency notice on Wednesday, requiring consumers register their names when purchase imported chilled or frozen food. It's the latest move among a slew of cities across the country in taking strict measures to prevent cross-border spread of coronavirus via cold-chain storage.