The fire special self-regulating heating cable, supporting electric heat tracing control box provides professional the Beijing fire tube dedicated control box from the temperature control of heating cable and supporting electrical heat tracing, quality assurance, price concessions.: Self-regulating heating cable, self- temperature control heating cable with a conductive polymer material for the heating element, electric tracing hot energized fever, can automatically adjust and control their own point temperature and maintain a constant temperature. Compared with the parallel single-phase, three-phase heating cable, since the temperature control heating cable automatically limit heating temperature. Electric tracing heat with the temperature change of the heating system automatically adjusts the output power, and therefore it changes the required using the conventional constant power heater is heated the system to adapt the method of heating of the heater, so that to allow the heater to adapt the system to be heated, since The temperature control heater with multiple overlapping too hot and burned the phenomenon does not occur. 2, two parallel copper hinge line for the power bus. Electric Heat Tracing middle uniform packed with a conductive polymer material for the heating core material. When the bus when power is turned on, the current flow through the lateral the heating core material between the two bus, so that the heating of the core material, automatically increases its resistance followed, when the core material is the temperature to rise to a certain value, the resistor has to almost blocking current the extent of the temperature of the core material is no longer increased, At the same time, the core material through the sheath to the heating system of the heat transfer, the temperature dropped and when the temperature drops to a certain value, the resistance has been gradually reduced, and the heating temperature of the core material has increased, So the cycle, you can maintain a constant temperature heating system.