(e) technical services, technical advice, technology transfer, technology promotion; software development; retailing of cameras and telescopes; production of cameras and equipment; sale of cameras and equipment; production of equipment and equipment for the sale of cameras and equipment; sale of equipment for the sale of video and video equipment; manufacture of equipment for the sale of mobile communications equipment; sale of equipment for the sale of electrical equipment; sale of equipment for the sale of electronic equipment; production of equipment for the sale of electronic equipment; and production of equipment and equipment for the sale of electronic equipment