Technical planning for 03 bidding packages in 2024 and 2025 of the national science and technology project "Research on manufacturing materials to reduce ground resistance and improve the nonlinear coefficient of lightning protection valves based on nanomaterials ZnO, Bi2O3, Sb2O3, CaO mixed with rare earths have properties of enhancing high lightning resistance, oriented for application in power transmission", code number ĐTĐL.CN-22/23