Constant temperature heating component dryers are mainly used in occasions that require strict temperature control. They can maintain a relatively stable temperature inside the dryer to ensure the quality and effect of dried objects. There are generally two types of constant temperature dryers: natural convection type and forced convection type. The natural convection type dryer makes the air circulate through the natural convection of the heat of the heater. This method is not easy to cause the scattered objects to be scattered by the air flow, so it is suitable for drying powdery objects that are easy to scatter. It uses the buoyancy generated by heating to make the gas naturally convect, so as to make the temperature inside the dryer uniform. The forced convection type dryer, on the other hand, uses a fan to circulate the heat of the heater. Compared with the natural convection type, the temperature distribution inside the dryer is more uniform, and due to the stable air flow, the drying time is usually shorter than that of the natural convection method. The heating component of the constant temperature dryer is the key to ensure the constant temperature effect. It usually uses high quality heating materials, and is equipped with a precise temperature control system. The temperature control system can monitor the temperature inside the dryer in real time. Once the temperature deviates from the set value, it will automatically adjust the power of the heating component to keep the temperature stable. Generally, the maximum temperature of the constant temperature dryer can be set between 200 and 300 degrees Celsius, and the temperature control accuracy can reach within a very small range. In addition, constant temperature dryers are often equipped with timer programs and over temperature protection functions. The timer program allows users to set the drying time according to their needs, and the over temperature protection function can automatically cut off the power of the equipment when the temperature exceeds the set value due to a control system failure, to ensure the safety of use. Constant temperature heating component dryers are widely used in scientific research experiments, such as drying glassware for experiments, drying experimental samples, and are also used for sample degassing, curing, and some analysis under constant temperature conditions, such as heat resistance testing and moisture measurement.