The environmental protection industry is a general term for technological development, product production, commercial circulation, resource utilization, information services, technical consulting, engineering contracting and other activities carried out in the national economic structure for the purpose of preventing and controlling environmental pollution, improving the ecological environment, and protecting natural resources. According to the above definitions, which of the following is not in the environmental protection industry? ['An enterprise cooperates with well-known foreign environmental protection companies to focus on the research and development of heavy metal wastewater treatment equipment.', 'An environmental protection technical college establishes an information consultation center to provide enterprises with pollution prevention technology consultation.', 'A large mining company newly established a comprehensive recycling company for comprehensive utilization of tailings.', 'In order to improve product quality, a green food production company has standardized quality standards and production technology processes.']