首发经济概念股走强，多股涨停

Group 1 - The core viewpoint of the article highlights the strong performance of initial public offering (IPO) economic concept stocks, specifically mentioning that Anji Food, Dongbai Group, and Huifa Food have reached their daily price limit increase [1] Group 2 - Anji Food, Dongbai Group, and Huifa Food are identified as the key stocks that have experienced a surge, indicating a positive market sentiment towards IPO-related companies [1]