Group 1 - The core viewpoint of the article is that Zhongcai Technology (002080.SZ) has successfully developed special fiberglass products that have been certified by leading domestic and international clients and are now in mass supply [1] - The company currently offers low dielectric, low expansion, and quartz cloth products, which are experiencing strong demand and supply shortages in the market [1] - Zhongcai Technology is actively enhancing its supply capacity to meet the growing market demand for these specialized products [1]