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company r & d projects including 500kv power transmission line useing aluminum clad steel core project, ± 800kv hvdc transmission lines with acsr production and technological innovation projects, r & d projects of carbon fiber composite core overhead conductors, highly conductive high-strengthresistant aluminum alloy wire, ± 660kv dc transmission project line with acsr development, ce the (cable expert) system development and application of information technology, acsr-720/50 acsr projects; obtained the 14 patent certificate, 3 certificate of invention patent, 10 utility model patent certificate , one design patent certificate.