温州宏丰：电接触材料、金属基功能复合材料及硬质合金材料均可应用于航空航天领域

Group 1 - The core viewpoint of the article is that Wenzhou Hongfeng (300283.SZ) produces materials that are applicable in the aerospace field [1] Group 2 - The company manufactures electrical contact materials, metal-based functional composite materials, and hard alloy materials [1]