Moudle XY-22 Diameter: 22cm 1. Special Design. Double deck made in stainless steel, and with the special heat preservation materail. It can last heating after move away from the fireplate. 2. Save energy. The time for cooking the soup, rice, meat. Ect. Is as same as the time for steam the boiled water. As long as water boiled can turn off the fire, it can save the energy for 50%-70%. 3. Keep the warm and fresh. 4. Easy operation. Save the time, 5. Environmental protect, without the fume.