永贵电器：HDC重载连接器产品主要应用于轨道交通与工业领域，在新能源重卡和核工业领域，有部分特定场景

Group 1 - The core product of Yonggui Electric (300351.SZ) is the HDC heavy-duty connector, primarily used in rail transportation and industrial sectors [2] - There is potential application of HDC products in specific scenarios within the new energy heavy truck and nuclear industry fields [2]