万马股份(002276.SZ)：航空导线等部分产品符合机载和航天设备要求，应用于航空及地面装备等

Group 1 - The core viewpoint of the article highlights that Wanma Co., Ltd. is actively involved in the submarine cable sector, producing various products such as insulation layers, ultra-smooth semiconductive shielding materials, and protective sheaths for submarine cables, which are applied in offshore wind power cables [1] - The insulation layers and semiconductive shielding materials have been successfully utilized in several major domestic and international submarine cable transmission projects, and the company has participated in technical challenges for high-voltage cable cutting-edge projects [1] - Currently, these products account for a small proportion of the company's overall revenue [1] Group 2 - In the aerospace sector, the company's aviation wires and other products meet the requirements for airborne and aerospace equipment, being applied in both aviation and ground equipment [1] - The business related to aerospace currently represents a very small portion of the company's total revenue [1]