1) 3.15mm CCA + Foamed PE + 14.31 Welded AL Strip+ 15.6mm PE 2) 3.15mm CCA + Foamed PE + 14.31 Welded AL Strip+ 15.6mm PE +2.77mmSteel Messenger 3) 3.15mm CCA + Foamed PE + 14.31 Welded AL Strip + Flooding Compound + 15.6mm PE 4) Customers' specifications are welcomed. Note: 1)Al tubes or welded Al strips available; 2) We can manufacture according to customers' specifications.