1. Al foil:Bare or hydrophilic,t=0.1-0.15mm; 2. Cu tube:Inner smooth or inner grooved, 3. O.D.:7mm,7.94mm,9.52mm.12.7mm. Wall thickness: t= 0.33-0.35mm 4. All evaporators use high quality Aluminum foil and Copper pipe. 5. This Air Conditioner Heat Exchanger used for standing type air conditoner