When purchasing software and hardware equipment, consumables and construction materials, the manufacturers that can provide products with the five major green label such as environmental protection label, energy saving label, water saving label, green building material label and carbon label are given priority to undertake the procurement. Vendors that have not obtained the environmental protection related mark or certificate number may follow the ISO50001 college energy management manual specifications, the purchases, products, and equipment each unit utilize or purchases may have a significant impact on the energy performance of campus operations, thus, establishing evaluation standards, implementing standards for energy use, consumption, and efficiency during the life of the plan or expected operation is extremely important. Units must inform the supplier when purchasing, implement the environmental ecological economics of the product life cycle, and practice the consistency of the environmentally friendly concept.