6、s,theorderofcastandtheanalysisoftheresultpartlyorsynthetically.Finally,wefind problems inthe industrydeveloping and put forward somesuggestionsofimprovement.Keywords:Foodmanufacturinglistedcompanies;Performanceevaluation;Factoranalysis-5-目录1绪论11.1研究背景及意义11.2国内外