Energy audit is the analysis, diagnosis, evaluation, and proposal of reasonable improvement suggestions for the utilization of energy and resources in the production, operation, or management processes of enterprises and institutions. The process includes comprehensive management level analysis and evaluation of energy and material procurement, storage, distribution, use, processing conversion, and equipment conversion energy efficiency. Assist enterprises in mastering the situation of energy equipment, energy flow, energy consumption, energy management, and energy measurement, exploring energy-saving potential, and improving energy management level.