美国4月批发库存月率 0%，预期0.4%，前值由0.40%修正为0.3%。

Group 1 - The core point of the article indicates that U.S. wholesale inventories remained unchanged in April, with a month-on-month rate of 0% [1] - The expected change for wholesale inventories was 0.4%, indicating a significant deviation from market expectations [1] - The previous month's value was revised down from 0.4% to 0.3%, reflecting a downward adjustment in inventory growth [1]