Design, research and development, maintenance and leasing of fluid equipment and supporting equipment; Light industry machinery, food machinery, chemical machinery and equipment, water treatment equipment, industrial automation equipment, electrical equipment, transmission equipment, pipes, valves accessories, water pump design, manufacturing, processing, wholesale, retail; Design and installation of general pipeline, clean and sterile pipeline engineering; Engaged in the import and export of goods (goods excluding the import and export of import and export) and technology import and export business.