Specifications:  Color: Red.  Material: Carbon fiber.  Product Name: Carbon fiber heating wire 100m.  Insulating materials: Silicone rubber.  Infrared wavelength: 8UM-18UM.  Conductor resistance: 6K = 61±10％Ω M.  Heating conductor: 6K.  High voltage test: 3000V.  Maximum power: 25W / M.  Maximum withstand temperature: 200℃.  Leakage current: 0.05mA/m.  Length: 20/30/50/100 M.  Working voltage: the cable can work under different voltage, but it needs to use appropriate length. If you don't know how to calculate the power, please contact us.     Product Power Calculation:  Voltage * voltage / total resistance = power.  For example: 6K carbon fiber, length of 6 meters.  220V × 220V / (6 m x 61 Ohm) =132 watts.  For example: 6K carbon fiber length of 10 meters.  220V × 220V / (10 m x 61Ohm) =79 watts.  The data shows that the longer heating wire you use and the smaller output power. (The min length of 12K carbon fiber heating wire is 10 meters)    Features:  ✔ With excellent heat resistance. Don't need other transmission medium, the electrothermal conversion efficiency is above 98%.  ✔ Excellent insulation.New infrared floor heating, make the temperature uniformity, promote blood circulation.  ✔ Having good cold resistance and excellent medical rationalization.  ✔ The carbon fiber heating wire cost little, and has a long life span, an investment, life-long, low maintenance costs. And etc.  ✔ You can manually make heating equipment, electric blankets, car seat heater, heating appliances, animal heating system, heating system, etc.  ✔ Suitable for farms, pig insulation board, jade bed, electric blanket, electric heating towel rack, footbath, rice cookers, pet pad, electric warm clothing, piping warm, ect.     Package Contents:  Buy 100m = 100m cable + 20 pcs copper tube + 20 pcs sleeves.  or Buy 50m = 50m cable + 10 pcs copper tube + 10 pcs sleeves.  or Buy 30m = 30m cable + 6 pcs copper tube + 6 pcs sleeves.  or Buy 20m = 20m cable + 4 pcs copper tube + 4 pcs sleeves