1>Materials: yellow copper ,phosphorus copper wire (tin bronze), purple copper wire 2>good service 3>good quanlity Copper Wire Round Copper Wire: 0.025mm-2.0mmRectangular Copper Wire: a: 1mm-10mm b: 3mm-35mmThermal Class: B 130, F 155, H180, HC 200, C 220, C+240Standards:IEC60317-0-1 IEC-60317-34IEC-60317-3MW5-CJISC3202Application:Fan, air-conditioner, electric tool, washing-machine, micro-motor, ...