The beijing artistic instrument plant is registered at camp no. 38 of the industrial park of the camp of the chief of the district of beijing, with the registration authority being the market supervision authority of the beijing zone for the development of economic technology, represented by a legal person, and includes the manufacture of detection instruments, general parts and components; the development, sale and sale of detection instruments, general parts and components; the sale of construction materials, hardware, electricity (excluding three motorcycles and motorized wheelchairs for persons with disabilities), mechanical equipment; and the development, transfer and counselling of technology. (an enterprise shall, in accordance with the law, freely choose to operate a project and carry out an activity; a project which is subject to legal approval and which, with the approval of the relevant sector, carries out an activity in accordance with the approved content; and it shall not engage in an activity in which the industrial policy of the municipality prohibits or restricts the operation of such a project. I'm not sure