... and discoloration, and has good corrosion-resistant effect, motor cover also by the special treatment.4,The insulation ... 5,The insulation grade of currently supplied fan is B-class, F-class and H-class, the ... . Our factory will put the IP56 external rotor motor with new structure soon, and this structure has ... dual voltage and so on.7,The line fan motor can be directly leaded out, and can provide ...