Research and development, manufacture (limited to branch operations), and sale of intelligent control systems and environmental monitoring specialized instruments; computer software development; computer system integration; Internet of Things technical services; commercial Internet information services (subject to obtaining permission or approval before operation); research and development, manufacture (limited to branch operations), sale, repair, and leasing of specialized production vehicles and mechanical equipment; urban household waste collection and transportation services (subject to obtaining permission or approval before operation); urban household waste treatment services (subject to obtaining permission or approval before operation); urban excrement treatment services;绿化管理; water pollution control services; urban water area treatment services; recycling of再生物资; environmental science and technology research; sewage treatment and its reuse. Permitted items: Class II value-added telecommunications services. General items: research and development of Internet of Things technology; sale of Internet of Things equipment. Limited to branch operations: manufacture of Internet of Things equipment.