class B self-solderable polyurethane enamelled copper wire, from size 0.05-1.40. IEC 60317-4.MW 75-C, UEW wire for short. It has good mechanism and electric properties.Except for its basic electric properties, self soldering is its major property which is different from polyester enamelled copper wires. This types of wire has even wider use than normal enamelled copper wires, which can be used in electronic transformers, electronic winding, micro-motor, relay, electric appliances and other electronic apparatus.