悦安新材：公司吸波材料可应用于航空飞行器中，目前仅向下游提供原材料，销售规模占收入比重较小

Group 1 - The company confirmed that its radar-absorbing materials can be applied in stealth aircraft and drones [2] - Currently, the company only provides raw materials to downstream customers, and the sales scale accounts for a small proportion of its revenue [2]