A股天津自贸区盘初走强，海泰发展拉升涨停，桂发祥、恒银科技、渤海化学、天保基建跟涨。

Group 1 - The A-share market in Tianjin Free Trade Zone showed strong performance at the beginning of trading, with Hai Tai Development hitting the daily limit up [1] - Other companies such as Gui Fa Xiang, Heng Yin Technology, Bo Hai Chemical, and Tian Bao Infrastructure also experienced gains [1]