The carbon nanotube furnace electric heater transfers heat in the form of heat energy and far-infrared radiation, and the heat conversion rate reaches more than 98%, which saves 30%-50% more energy than other electric heating methods. Carbon nanotubes are extremely environmentally friendly products, no light, no noise, no dryness, no leakage, life expectancy of up to 50 years, without any environmental damage. We also provvide with carbon nanotube film, carbon nanotubes membrane and carbon nanotube fiber.