菲利华：公司拥有石英砂、石英棒、石英纤维、石英电子布全产业链垂直一体化的研发和生产能力

Group 1 - The core viewpoint of the article highlights that quartz electronic cloth is an optimal material for high-frequency and high-speed copper-clad laminates (CCL) due to its excellent dielectric loss and ultra-low expansion coefficient [1] - The company possesses a vertically integrated research and production capability across the entire industry chain, including quartz sand, quartz rods, quartz fibers, and quartz electronic cloth [1]