What is the working principle of ceramic heater, how is the price?

The working principle of the ceramic heater is as follows:Ceramic heating sheet, which is a safe and reliable electric heating plate with heat and no heat on the board surface and no open flame. The heating plate is mainly thermally conductive due to its use, so the thermal efficiency is high. Type of heating plate: can be divided into thin shell type heating plate, cast plate type heating plate tubular element cast plate type electric heating plate.The ceramic heating core is a new generation of medium and low temperature heating elements produced by directly printing the resistive paste on the AL2O3 alumina ceramic green body, baking at a high temperature of about 1600 ° C, and then treating it with electrodes and leads. It is another new product after the alloy heating wire and PTC heating element. It is widely used in many fields of daily life, industrial and agricultural technology, communication, medical care, environmental protection, etc.