chemicals for use in processing and developing films

repairing, maintaining, and installing medical imaging diagnostic and therapeutic equipment, rooms, accessories and supplies

training people in the use and operation of medical imaging diagnostic and therapeutic equipment

door to door and catalog sales featuring medical imaging diagnostic and therapeutic equipment, accessories, and supplies, industrial non-destructive testing equipment; namely, quality control and technical aids, screens, cassettes and film holders, film identification devices, darkroom and processing equipment, film viewing, storage and handling equipment, protective equipment and materials, X-ray inspection equipment, realtime X-ray equipment, magnetic particle equipment and supplies, and X-ray film and radio graphic supplies, accessories, and supplies; designing rooms for medical imaging diagnostic and therapeutic equipment and designing systems of medical imaging diagnostic and therapeutic equipment for customer needs