正海生物(300653.SZ)：产品可吸收硬脑（脊）膜补片、硬脑（脊）膜补片主要应用于神经外科

Group 1 - The core viewpoint of the article highlights that Zhenghai Biological's products, specifically absorbable dura mater patches and dura mater patches, are primarily used in neurosurgery for the repair of dura mater defects caused by various reasons [1] Group 2 - The company's products are designed to address dura mater defects, indicating a focus on the neurosurgery market [1] - The application of these products suggests a potential growth area within the medical device industry, particularly in neurosurgical procedures [1]