ILJIN Group (also known as ILJIN Holdings and 일진그룹) is a company active in the electrical infrastructures, materials, parts, construction and lighting, medical systems, broadcasting, and IT businesses. The electrical infrastructures business provides electric cables, copper wire and aluminum alloys, high voltage and electrical devices as well as engages in the development, high voltage transmission and transformation of electricity, electrical supply, construction, and more. The materials business offers electric foils, polycrystalline diamond, diamond powder, tungsten carbide, sapphire ingots and wafers, and other diamond products. The parts business specializes in the development and production of smartphones and tablet pcs touchscreen panels, special steel tubes, and composite material products. The construction and lighting business provides civil and industrial construction services, offers LED (light-emitting diode) lighting and display products as well as a Curtain Wall system, an outer covering of buildings made of aluminum, glass, granite, and other materials. The medical, broadcasting, and IT business is engaged in the ultrasound medical systems provision as well as TV broadcasting, system integration, system maintenance, IT infrastructure operation, IT consulting, and more.