... voltage devices, common transformer, inductance coils, electromotors, household electrical and micro-motors; 3.Used in electrical tools, ballasts, automotive electronics, refrigerator ... -coated with polyamide-imide enamelled round aluminum wire Insulation material: Polyester,Polyester-imide,Polyesteramide-imide,Polyimide, Polyurethane.Enamel types:QZ(PEW),QA ...