Bare overhead conductor is mainly divided into conventional conductor such as AAC, AAAC, ACSR, ACSR. AW, ACAR, AACSR, etc and special conductor such as Thermal-resistant Aluminum Alloy Conductor, Invar Core Conductor, Gap Type Conductor, and Annealed Aluminum Conductor. ZTT is the one who first concentrates on the development and production of big cross section and big length steel core aluminum stranded wire, high strength aluminum alloy conductors, thermal-resistant aluminum alloy conductor and series products etc. The products have passed the whole testing of National Electric Wire and Cable Testing Center and attained the international advanced level. It has passed the identification of two Ministries in May of 2011