美国3月工厂订单月率 4.3%，预期4.50%，前值由0.60%修正为0.5%。

Group 1 - The core point of the article indicates that U.S. factory orders in March increased by 4.3%, which is slightly below the expected increase of 4.5% [1] - The previous month's factory orders were revised down from an initial value of 0.6% to 0.5% [1]