The scope of operation of changyang instrument technology ltd.: development of instrumentation meters, valve control equipment; sale, sale and maintenance of industrial automation equipment, valve locators, electrical converters, air filterers, hydraulic and aerodynamic components; sale of general machinery and accessories, electrical machinery and equipment, metal materials, hardware, construction materials, office supplies, daily supplies, labour safety supplies. (projects subject to legal approval may be carried out only with the approval of the relevant department) yes