... 7.94mm,9mm,9.52mm,10mm,etc,grooved or smooth tube.4.Fin Type: louver,flat ,corrugated5.Aluminium Foil: ... procedure: tube bending, punching fin, expanding, digressing, drying,Welding, leakage test, bending, inspection, packing Air Conditioner part,Air Cooling Evaporator,5 ... .0Rows 6.0Holes,Copper Tube,Aluminium Foil