A股玻璃玻纤概念早盘走高，宏和科技、九鼎新材双双涨停，国际复材、中材科技、长海股份等个股跟涨；据多家媒体报道，光伏玻璃行业加速推进“反内卷”，多家企业或7月份起减产。

Group 1 - The A-share glass fiber concept stocks experienced a rise in early trading, with companies such as Honghe Technology and Jiuding New Materials hitting the daily limit up [1] - International Composite Materials, China National Building Material Group, and Changhai Co., Ltd. also saw their stocks increase in value [1] - The photovoltaic glass industry is accelerating efforts to reduce competition, with multiple companies potentially reducing production starting in July [1]