Dilong mirror heater for large bathroom mirrors, we also called mirror demister, defogger, or de-misting pad, which is an electric mirror heater  pad for permanent mist free mirrors, simply stick the self adhesive demisting pad to the back of any bathroom mirror & connect to the lighting circuit.  Dilong’s mirror heater is fully approved by international standards. 

mirror heater illuminated lighted bathmirrors
• easy to fit 
• Safe to use 
• Quickly warms 
• Economical 
• Simplicity