Southwest Securities released a research report on April 23 stating that Huachen Equipment (300809.SZ) was given a holding rating. The main reasons for the rating include: 1) deepening the field of high-end grinders, with rapid revenue growth and a year-on-year increase in gross margin; 2) the cost ratio remained stable throughout the year, and the net interest rate increased significantly year-on-year; 3) Using roller grinders as a base, horizontal expansion of sub-U grinders, thread grinders, and guide rail grinders, and future growth can be expected. (Mainichi Keizai Shimbun)