Color type: white, red, black, blue, green, yellow, translucent heating wire material: constantan, manganese-copper alloy, zinc-copper-nickel alloy copper-nickel alloy ,etc. Power Frequency Withstand Voltage: 3000V Resistance range of 0.1/M--10000/M Insulation resistance: 100M Voltage resistance : 300V Resistance to temperature: ©\60/+200 Product Life:> 10000H Products Bending Test: > 6000 times Product circumnutated test:> 25000 times. Application: heating pads, electric clothing, electric gloves, massage medical equipment, refrigerators, air-conditioning, , defrost equipment. Product Description: 1. Wire-material: nickel-chromium/constantan/manganese-copperalloy/copper-nickel/zinc &copper-nickel alloy. 2. Heating wire type: spira ,multi-core, single core3 Fat Hotline structure: heating wire 3: construction : wire wound on glass fiber coated with silicone rubber. 100m/roll.