Main business: Research and development of mechanical equipment; Technical services, technology development, technology consultation, technology exchange, technology transfer, technology promotion; Processing of mechanical parts and components; Sales of mechanical parts and components; Manufacturing of coating equipment; Sales of coating equipment; Import and export of goods; Technology import and export; Manufacturing of water turbines and auxiliary equipment; Manufacturing of steam turbines and auxiliary equipment; Sales of steam turbines and auxiliary equipment; Manufacturing of spray guns and similar appliances; Sales of spray guns and similar appliances; Manufacturing of general equipment (excluding the manufacturing of special equipment); Manufacturing of general components;