... already supply to some famous manufacturer in Europe and China.copper tube diameter:7mm,5/16" , 3/8",12mm,1/2 ... "type of copper tube:inner screw thread/inner grooved pipe or bare/smooth ... .fin evaporator,cooling cabinet evaporator,air cooled evaporator,heat exchanger,copper evaporator, aluminum evaporator,evaporator coil,refrigerator evaporator,fridge evaporator,freezer ...