10 years experiences Conforms to ISO19001 Customized Excellent quality Competitive price... Product Features:Material: copper, aluminium, galvanized plate.Copper pipe: diameterΦ7, Φ7.94, Φ9.52, Φ12.7mm, etc. inner grooved or smooth tube.Aluminium foil: hydrophilic or bareFin type: louver fin, flat fin, corrugated finPitch of fins: can be adjusted between 1.8-5.8mmPitch of holes and pitch of rows: ...