The range of operations included the installation of radio-protective equipment, radio-protective doors and windows, lead glass, lead plates, lead coatings, protective paints (without dangerous chemicals), radiation-protective glass, sulphate sands, radiation-protective screens, composite sheet sales, industrial surveying rooms, architectural engineering, construction, sale of sheeting and pipe metal materials. (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities) i'm not sure