The news consequently pushed its Hong Kong-listed shares down 1.2% lower on Monday.
While the average selling price of its coal slumped 12.4% year on year for the first half, China Coal coal sales centre president Wu Jun is expecting some recovery.
“We expect coal prices to pick up in late third quarter or early fourth quarter,” he said according to the South China Morning Post.
He reportedly said Beijing's "micro-economic" stimulus had already helped demand, while the industry push to cut output by 10% (followed by leading producer China Shenhua Energy and China Coal) would relieve oversupply.