沃尔核材：公司的通信线缆业务产品广泛应用于高速通信设备等核心市场

Group 1 - The core business of the company includes communication cables widely used in high-speed communication equipment, industrial equipment, robotics, and automotive sectors, but does not currently involve the aerospace field [1] - The company's EHS and CELB series heat-shrinkable insulation sleeves have been integrated into the supply system of China Commercial Aircraft Corporation and are applied in the C909 and C919 domestic aircraft models [1]