1. Polyurethane (QA/UEW): It is mainly used in some high-frequency transformers or electronic transformers with not too much power and not too much heat. Its biggest feature is direct welding and strong high-frequency resistance;

2. 180 polyesterimide (QZY/EIW); Used in some common low-power transformers, such as power transformers on some household appliances, mobile phone chargers and so on; The comprehensive performance of enameled wire is good,

3. 200/220 Polyester Imide Composite Polyamide Imide Enamelled Wire (QZY/XY EI/AIW): It can be used in most transformers, with strong high temperature resistance and superior comprehensive performance.