兼评3月PMI数据：PMI重回扩张，预计Q1GDP同比约5.0%

Manufacturing Sector - March manufacturing PMI improved to 50.4%, up 1.4 percentage points month-on-month, indicating a return to expansion[3] - The production index rose by 1.8 percentage points to 51.4%, while new orders increased by 3.0 percentage points to 51.6%[14] - Industrial raw material prices have rebounded significantly, with March PPI expected to rise by approximately 0.3% year-on-year[20] Non-Manufacturing Sector - Construction PMI increased by 1.1 percentage points to 49.3%, benefiting from the gradual resumption of projects post-holiday[22] - Service sector PMI rose to 50.2%, a 0.5 percentage point improvement, although new orders remain weak[30] Economic Outlook - Q1 GDP is projected to grow by approximately 5.0% year-on-year, supported by AI demand and fiscal spending[6] - The growth forecast includes primary, secondary, and tertiary industries at approximately 3.5%, 5.2%, and 5.0% respectively[34] - Input inflation may pressure profits in downstream enterprises, necessitating timely policy responses to support economic recovery[33] Risks - Potential risks include unexpected policy changes and a possible recession in the U.S. economy impacting domestic exports[35]