Guocheng Mining (SHE:000688) forecasted that its net profit attributable to shareholders for the first half would have jumped by between 73% and 92% year on year to a range of 900 million yuan to 1 billion yuan, according to a Shenzhen bourse filing on Wednesday.
The attributable profit a year earlier was 780.8 million yuan.
Earnings per share is expected to have risen to between 0.76 yuan and 0.84 yuan from 0.70 yuan a year earlier.
The Chinese mining company's shares dropped 4% at the close.