JH OIL Self-Regulating Heating Cable is our special product designed for Oil Well Heat Tracing, which has outstanding advantages of convenience for installation and maintenance. We can adjust and control the heating temperature automatically by PTC thermistor, not only without pollution to environment, but also realizing the high efficiency of viscous crude exploitation. This special technology is very safe and reliable. By the successful technical innovations, this product can be used in desert viscous crude and ocean viscous crude exploitation fields. This product’s output power is 40-50W/m at 10˚C, the highest tolerated temperature is 135 ˚C and the lowest installation temperature is -40˚C. You may visit our website http://www.ahjiahong.com to see more details, if you have any question, please send email to a.com for further discussion.