海关总署：中国5月煤及褐煤进口3604万吨，4月为3782.5万吨。

Group 1 - The core point of the article is that China's coal and lignite imports in May amounted to 36.04 million tons, a decrease from 37.82 million tons in April [1] Group 2 - The data indicates a month-on-month decline in coal imports, reflecting potential shifts in demand or supply chain dynamics within the industry [1] - The figures suggest that the coal market may be experiencing fluctuations, which could impact pricing and availability in the near term [1] - The reduction in imports could also signal changes in domestic production levels or energy consumption patterns in China [1]