which is widely applied to refrigerator, freezer, showcase, water dispenser, wine cabinet and solar panel (a) Specification9.52mm: 25mm*21.65mm7mm: 21mm*12.7mm , 21mm*18.2mm , 17.65mm*13mm (b) Copper pipe type: inner grooved pipe or bare pipe (c) Foil type: Hydrophilic or bare aluminum foil. (d) Fin type: Louver, corrugated fin or bare fin freezer parts(coil)