海关总署：中国4月钢材出口为1046.2 万吨，3月为1045.6万吨。

Group 1 - The core point of the article highlights that China's steel exports in April reached 10.462 million tons, showing a slight increase from 10.456 million tons in March [1] Group 2 - The data indicates a stable export performance in the steel industry, with only a marginal increase in volume from March to April [1]