... 20%,high effective heat conduction,working pressure :0.8Mpa Dryer, oil heating dryer, paper machine dryer*Safe, reliable*Light weight* ... small with multichannel recurrent structure*The unner layer enters the oil, with hose structure, prevents two radiations,reduces the heat ... loss *It saves enery and protecs enviroment to heat oil stove with eletricityOur company may undertake to manufacture each kind ...