PCB概念股震荡拉升，光华科技涨停

Core Viewpoint - The PCB concept stocks experienced significant fluctuations, with Guanghua Technology hitting the daily limit, Shenghong Technology rising over 8%, and other companies like Yabo Xuan, Founder Technology, and Lihexing also seeing gains [1] Group 1 - Guanghua Technology reached the daily limit, indicating strong investor interest and confidence in the stock [1] - Shenghong Technology saw an increase of over 8%, reflecting positive market sentiment towards the company [1] - Other companies in the PCB sector, including Yabo Xuan, Founder Technology, and Lihexing, also experienced upward movement, suggesting a broader rally in the industry [1]