Calculation standard of distribution network construction budget for 20kV and below Volume I Distribution network construction budget quota project for 20kV and below Volume II Distribution network electrical equipment installation budget quota project for 20kV and below Volume III Distribution network overhead line project budget quota project for 20kV and below Volume IV Power engineering installation material cable project budget price (2008 edition) Methods and Parameters for Economic Evaluation of Construction Projects in Central China (China Planning Publishing House), Volume IV, Budget Quota of Electric Power Construction Projects (2008 Edition), Price Information of Equipment and Materials in 55 yuan 20kV and Below Distribution Network Project (June 2009), Calculation Standard for 25 yuan Power Grid Construction Budget, and Guide for Using Budget Quota of 35 yuan 20kV and Below Distribution Network Project.