Beijing called a four-month campaign to guarantee food and product safety a "complete success," Reuters reported. The campaign was launched after a series of widely publicized issues surrounding children’s toys and pet food sparked international concern over Chinese exports. As part of the campaign, which inspected more than 3,000 toy exporters and manufacturers, China revoked 600 export licenses. China’s chief quality inspector also said that the practice of using non-food materials and recycled food in food production had been "basically eliminated." Seeking to allay concerns over food safety in the run-up to the Olympics, Beijing has announced measures to monitor food quality during the games.