冠昊生物：公司涉及神经外科的主要产品有生物型硬脑（脊）膜补片、B 型硬脑膜补片等

Group 1 - The company, Guanhao Biological (300238), clarified on September 10 that it is not involved in the brain-computer interface business [1] - The main products related to neurosurgery include biological dura (spinal) membrane patches and type B dura membrane patches [1]