1\ Through improvements made on existing carbon vacuum tube, our new carbon heating tube (first in South Korea) can generate hot water by higher heat-generating temperature (750℃), heat-generating speed (3 seconds), and one way power input. 2\ Through application of our new carbon heating tube, hot-water generating device was developed, and our company’s technology on developing boiler and carbon manufactures were combined to create carbon boiler that can save more than 30% of energy compared to existing electric boiler.