A股中广核技盘中拉升涨停，成交额超4亿元，封单45万手。

Group 1 - The stock of China General Nuclear Power Technology (中广核技) experienced a significant surge, reaching the daily limit increase in A-shares [1] - The trading volume exceeded 400 million yuan, indicating strong market interest and activity [1] - There were 450,000 buy orders, reflecting robust demand for the stock [1]