中韩自贸区板块活跃，朗姿股份涨停，华光源海、ST新华锦、青岛金王跟涨。

Core Viewpoint - The China-South Korea Free Trade Zone sector is experiencing significant activity, with Langzi Co., Ltd. hitting the daily limit up, and Huaguang Yuanhai, ST Xinhua Jin, and Qingdao Jinwang following suit in their stock performance [1] Group 1 - Langzi Co., Ltd. has reached a daily trading limit increase, indicating strong investor interest and confidence in the company [1] - Huaguang Yuanhai, ST Xinhua Jin, and Qingdao Jinwang have also seen their stock prices rise, reflecting a broader positive sentiment in the China-South Korea Free Trade Zone sector [1]