... a whole by spreading the resistor slurry on the alumina ceramic substrate under 1600°C. Then it is through the process ... box, kerosene-boil offer, electron-ic cooker, bidet, water heater, far infrared laser physical therapy machine, injector warmer, constant temperature groove for ... , electronic thermal coincidence circuit, water & oil & acidic alkali liquid heater etc. MCH alumina ceramic plate heater