The registration authority is the administrative approval board for the former county of hyeshan city, which is represented by a legal person. It operates in the production and sale of film machines, audio-visual equipment, slides and projecting equipment, screens, curtains, tents and canvass; and in the import and export of goods and technologies for self-employment and agency (except goods and technologies for which the state limits the operation of enterprises or prohibits import and export). (projects subject to legal approval may not operate without the approval of the relevant department)