OSI Group, a privately-held company based in Aurora, Illinois, was thrust into the spotlight last week when a Chinese TV station reported that one of its Shanghai plants repackaged old beef and chicken and slapped new expiration dates on them. The scare has ensnared chains including McDonald's, KFC, Burger King and Starbucks, all of which got ingredients from a unit of OSI in the region called Shanghai Husi Food Co Ltd.

No 10 Subway

Number of outlets in 2012: 411

Number of outlets in 2013: 440

Customer buys food at a Subway fast food restaurant in Beijing, China, Dec 5, 2013. [Photo/IC]

Yum's China restaurant sales jump as KFC bounces back	Meat supplier to fast-food giants raided	New scare hits fast food chains