Improve the quality of the medium and low voltage power grid in 2024-2025 for CC substations with electricity generation > 5,000kWh/month in the eastern area of Nghi Son town, Thanh Hoa province; Improve the quality of the medium and low voltage power grid in 2024-2025 for CC substations with electricity generation > 5,000kWh/month in the southern region of Quang Xuong district, Thanh Hoa province