According to customs statistics, in April 2019, China's export volume of brown corundum was 48,200 tons, a decrease of 24.50% from the previous month and a decrease of 24.43% from the same period last year. According to the importing countries and regions, there were 13 countries and regions that imported more than 1,000 tons of brown fused alumina in China in April 2019. Among them, the US imports amounted to 9750.65 tons, accounting for 20.24% of China's total export of brown fused alumina.

In April, China's imports of brown corundum were 723.14 tons, an increase of 29.96% from the previous month and an increase of 1244.73% from the same period last year. China mainly imports brown fused alumina from Japan and the United Kingdom, while the imported regions are mainly Henan, Jiangsu and Shanghai.