温州宏丰：在医疗领域，公司开发了用于治疗血管瘤、显影、电极手术刀等医用材料

Group 1 - The company, Wenzhou Hongfeng (300283), has developed medical materials for treating vascular tumors, imaging, and electrosurgical knives in the medical field [1] - Currently, the company's existing products have not been applied in the brain-machine interface field [1]