通光线缆：航空航天用耐高温电缆为装备线缆产品的子分类，销售额占公司总营收的比例较小

Group 1 - The company, Tongguang Cable (300265.SZ), primarily produces optical fiber cables, power cables, and equipment cables, with aerospace high-temperature resistant cables being a subcategory of equipment cables [1] - The sales revenue from aerospace-related cables constitutes a small percentage of the company's total revenue [1] - The company has not yet officially supplied its products to COMAC (Commercial Aircraft Corporation of China) [1]