1.copper tube:grooved or smooth tube 2.fin:hydrophilic or bare fin 1.Type: Refrigerator Parts2.Model: CR-EP3.Copper Tube Diameter: 7mm ... : tube bending, punching fin, expanding, digressing, drying,Welding, leakage test, bending, inspection, packing Air Conditioner part,Air Cooling Evaporator,5.0Rows 6.0Holes ...