Heat Retainer / product and application

In kitchen, hot water goes into drain right after use,it’s a great waste as the remaining heat energy is also gone with water at the same time.
Our solution, Heat Retainer.Our product : HEAT RETAINER. Used hot water will be channeled into the pipe of HEAT RETAINER, the remaining heat energy in hot water can be secured for second time, to its most, for keeping things warm. HEAT RETAINER keeps food warm esp in winter time, or can defrost frozen food.