Material 1.galvanized iron wire, 2.black annealed iron wire, 3.PVCcoated iron wire. Technique: Annealed Wire The loop tie wire as a binding wire used in packing or construction. It is easy to operate simply and directly, enhances the working efficiency, reduce pollution. We could also custom-produce diameter and lengths to your requirements. Finish of loop tie wire can be: black annealed, copper, ...