The furnace material is made of high-purity alumina polycrystalline fiber and aluminum silicate fiber cotton,which is heat-insulating and durable, with rapid heating rate and high efficiency.heating element is made of highquality silicon carbon rod, and the maximum heating temperature can reach 1400 °C.With over-temperature alarm,leakage protection instrument with temperature compensation and correction function with over-temperatureprotection, break protection, and other safe operation.High-precision intelligent display instrument with PIDadjustment and self-tuning function, and can be programmed with 36-segment temperature rise and controlprogram temperature control accuracy 1 °C, manual/automatic interference-free switching function, free toset the temperature rise curve.Unique furnace door design, the switch operation is safe and simple, the controllerand the box body are integrated, beautiful and convenient, and easy to maintain.