Beijing is hailing its efforts in the crackdown on illegal food additives, with a senior food-safety official telling state media that more than 5,000 companies have been shut down and more than 2,000 people punished...So far this year, the authorities have uncovered sales of drug-tainted pork, bean sprouts treated with a carcinogenic chemical compound, expired buns dyed to make them look fresh, and sweet potato flour made with corn, ink and paraffin...Following rising public anger and panic about such scandals, the State Council in April ordered local governments to clamp down on illegal additives used in the production of food. It also ordered the regulation of additive production, while calling for the building of a long-term supervisory mechanism and for industry self-discipline...[refers to Shanghui]