煤炭概念盘初活跃，冀凯股份、凯瑞德双双涨停

Group 1 - The coal sector showed significant activity on December 29, with stocks such as Jikai Co., Ltd. and Kairuide both hitting the daily limit up [1] - Other companies in the coal industry, including Huayang Co., Yongtai Energy, Yunwei Co., Yanzhou Coal Mining, China Coal Energy, and Lu'an Environmental Energy, also experienced price increases [1]