Make the U type and W type heating tube to be series-wound andshunt-wound to meet the rated voltage requirement. The fixedhousing  adopt the stainless steel or high quality hotzincification board to resist high temperature and corrosive.Matching the heat fuse and temperature controller to protect doublythe heating pipe of the air conditioner and keep safe.
Adopting the high temperature silicone rubber wire and importedconnecting terminal to make the electric connection more fixed andreliable