Wal-Mart's new delivery system addresses used oil, expired meat allegations

Wal-Mart Stores Inc announced on Thursday a series of measures to strengthen food safety in its Chinese stores after the world's largest retailer found itself again in the spotlight for firing Chinese staffers who accused it of food safety violations.

Wal-Mart's fresh food delivery network will cover all Chinese stores by the end of 2014, bringing to 11 the number of its fresh delivery centers in China, according to the company.