Local authorities have carried out measures to solve food safety issues involving mobile snack vendors and food processing workshops in the city over the past five months.

Many street vendors are seen selling breakfast in residential areas in the mornings. As it's hard to determine the source of their raw ingredients, the authorities have established companies to manage the vendors.

Local food and quality authorities have also helped small-size workshops, restaurants and snack bars improve their production and environment to get business licensed.

"We don't simply shut down those workshops or restaurants, but help them operate within the law if they can provide satisfactory conditions for food production," said Zhou Taitong, the city's vice mayor.

Authorities also encouraged groceries, hypermarkets and supermarkets to tell customers where their produce were from so it would be easy to trace problems if a food safety issue should arise, said Zhou.

Officials have seized all private pork slaughterhouses, designating 25 public slaughterhouses which have all signed agreements to ensure the pork's quality.

The city now is working on maintaining the accomplishments to ensure food safety during the 2010 World Expo.

"We will recall all the products which are found to have quality problems, and will cancel the business rights of companies which are not qualified to have the rights," said Zhou.

(Source: www.shanghai.gov.cn )