In today's era of increasingly strict environmental policies, even a small amount of greenhouse effect cannot be tolerated by the power grid construction in the core urban areas. As a leading electrical equipment manufacturer in China, Junray Electrical of Wenzhou has innovatively launched the AIR-12 Dry Air-Insulated Ring Main Unit. We have abandoned traditional SF6 and mixed gases and solely used pure dry air as the insulating medium, achieving true zero greenhouse gas emissions.