CHINFMINING (01258) opened higher by more than 6% in Hong Kong trading. At the time of writing, the stock was up 6.22%, trading at HK$14, with a turnover of HK$4.55 million. The movement follows a company announcement on April 24th regarding its preliminary financial results for the three months ended March 31, 2026. The group estimates attributable profit to owners of approximately $201 million, representing a year-on-year increase of about 63%. The primary drivers for this significant profit growth were higher international copper prices, alongside increased sales volume and selling prices for sulfuric acid. For the first quarter, the group reported cumulative production of approximately 38,635 tonnes of cathode copper, marking a 10% increase compared to the same period last year and achieving about 29% of its annual production target. Production of blister copper and anode copper totaled approximately 102,061 tonnes, a decrease of about 7% year-on-year, reaching roughly 29% of the annual guidance. Sulfuric acid output was approximately 262,686 tonnes, down 3% from the prior year, also fulfilling about 29% of the annual target. Production of cobalt contained in cobalt hydroxide was about 43 tonnes, a substantial decrease of 81%, achieving only 7% of the yearly production guidance. Conversely, output of liquid sulfur dioxide saw a significant rise, reaching approximately 3,072 tonnes, a 158% increase year-on-year, which represents about 31% of the annual target.