E&B TECH CO. LTD. is manufacturing the most superior electric ONDOL heating pipes which were certified as the patent of invention (no: 0511058) by developing the "Electric Hot Water Heating Pipe" based on the know-how and technology accumulated in the electric business for the past 25 years. E&B Boiler is, through its liquid itself, releasing lots of the far-infrared rays and anions, which activate human body ' s cellular tissues and energize life support activities. The generated heat energy in such processes, promotes to eliminate the toxic & waste matters and metal substances in the body thru sweating and to accelerate the blood circulation thru disassembling thrombi, and with no emitting electromagnetic wave, all those functions leads to the modern well-bing heating system.