General Projects: Manufacturing of gas and liquid separation and purification equipment; Sales of gas and liquid separation and purification equipment; Manufacturing of environmental protection equipment; Sales of environmental protection equipment; Manufacturing of water resources machinery and equipment; Sales of machinery and equipment; Manufacturing of packaging equipment; Sales of packaging equipment; Machining of mechanical parts and components; Sales of mechanical parts and components; Sales of chemical products; Research and development of machinery and equipment; Rental of machinery and equipment; General machinery and equipment installation services; Maintenance of electronic and mechanical equipment; Installation and repair of agricultural, forestry, animal husbandry, fishery machinery; Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; Import and export of goods; Import and export of technology. Permitted Projects: Production of medical devices; Sales of medical devices.