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Specifications Tinned copper wire is a type of copper wire coated in a thin layer of tin to protect the copper from corrosion that would decrease the wire's efficiency in humid or rainy climates, high-heat environments and in certain types of soil. 1. Heat wire material: heat wire adopt nickel chrome, constantan, manganese, copper alloy, copper, nickel, zinc copper alloy etc. 2. Heat wire types: silicone spiral heating wire, silica gel multi-fiber heating wire, silicone single-core heating wire. 3. The structure of: heat wire winding on the glass fibre, the outer package with silica gel. 4. Product test standard: UL758 standards about hair hotline. 5. Bending test of products: more than 5000 times, without exception (test standards in accordance with UL, IEC) 6. Products of curved around test: more than 25000 times, without exception (test standards in accordance with UL, IEC) Features: *Made of high electrical conductivity copper. *Used in professional maintenance of mobile phones, computers, laptops and other precision motherboard. *A copper wire to take place of wire cable. *Directly welding without scraping isolation layer