Green management is the integration of the concept of environmental protection into the operation and management of an enterprise. It involves all levels, fields, aspects, and processes of enterprise management. It requires that environmental protection is always considered in the operation and management of the enterprise and reflects green. According to the above definitions, which of the following is that are not green management? ['Reduce pollution emissions.', 'Greening the factory environment.', 'Procurement of environmental protection equipment.', 'Research on energy-saving technologies.']