2023-05-30: Investment Highlights: In May, the CITIC machinery sector rose 2.09, outperforming the Shanghai and Shenzhen 300 Index 5.75 percentage points, ranking second: up to the close of May 26, the CITIC machinery sector rose 2.09 in May, outperforming the Shanghai and Shenzhen 300 Index 5.75 percentage points,