Reasons for the closure of Wowo Jiajia toffee: Jiajia toffee produced and sold by Shanghai Wo Wo Group was found to have excessive coliforms, and the Shanghai Municipal Market Supervision Administration has requested that unqualified food and its producers and operators be investigated and recorded in the food safety credit files of food producers and operators. It is reported that coliform bacteria is one of the important indicators to evaluate the quality of food hygiene. Exceeding the standard may be caused by the pollution of packaging materials of processing raw materials, or the environmental pollution and incomplete sterilization in the production process, which indicates that the enterprise management is unqualified in the process of producing milk candy. According to the data of official website, Shanghai Wo Wo Group has an annual production capacity of 654.38+10,000 tons of candy, and its consumers are mainly children. Once children use milk candy with excessive coliform bacteria, they are prone to intestinal diseases such as dysentery, and may also have symptoms such as vomiting and diarrhea, indicating that they are irresponsible for the personal safety of consumers.