China Gold International Resources Corp. Ltd. Announces Transformational Mineral Resource Update for Jiama - Measured Mineral Resource Increased 523% and Proven Mineral Reserve Increased 1170%

China Gold International Resources Corp. Ltd. (CGG) announced a major NI 43-101 Mineral Resource and Mineral Reserve update for its flagship Jiama Copper Polymetallic Project in Tibet, effective June 30, 2026. The update reveals a 523% increase in Measured Mineral Resources, rising from 100 Mt to 623.1 Mt, and a 51% increase in Total Mineral Reserves from 440 Mt to 665.67 Mt.

Contained metal saw extraordinary growth, with Copper in Measured and Indicated resources increasing by 3 million tonnes, Gold by 7.12 million ounces, and Silver by 247.23 million ounces. The primary driver is an 1170% increase in Proven and Probable underground Reserves, which surged from a 2013 estimate of 200 Mt to 552.97 Mt, featuring a high average grade of 0.94% Cu / 1.56% CuEq.

The company states the current operations can support over 20 years of mine life at current capacities, with the resource update providing a basis for studying large-scale open-pit expansion scenarios. This release contains no forward-looking financial guidance, production targets, or cost estimates; it is purely a technical resource and reserve update.

China Gold International Resources Corp. Ltd. (CGG) announced a resource update that significantly expands the known scale of its Jiama deposit, marking a foundational shift in the asset’s geological confidence and long-term net asset value proposition. The company reported a 523% increase in Measured resources and a 1170% surge in underground reserves, a magnitude of growth that redefines the deposit's profile beyond incremental drill results.

The newly identified underground reserves are characterized by high-grade ore, averaging 0.94% copper and 1.56% copper equivalent. This grade profile supports the viability of a high-margin, long-life underground operation that is expected to dominate the asset's future cash flow, complementing the depleting open pits. These findings provide technical validation for the company’s claim of a 30-plus-year mine life, as presented in previous investor materials, and establish a geological basis for potential future expansion to 50,000 tonnes per day or beyond.

The announcement follows a period of significant market volatility for CGG, with shares experiencing a sell-off from approximately $43 to $21 driven by macroeconomic concerns, copper price fluctuations, and operational issues at the CSH facility. This resource update offers a company-specific positive development that may help decouple the stock from short-term macroeconomic headwinds.

China Gold International Resources Corp. Ltd. (CGG) operates the Jiama Copper Polymetallic Project in the Tibet Autonomous Region, which serves as the company’s primary asset. This producing mine features two open pits and two underground districts and is currently processing 34,000 tpd, with plans to return to 50,000 tpd by 2028.

The company’s secondary asset is the CSH Gold Mine in Inner Mongolia. This open-pit operation was recently affected by a localized slope stability event and is transitioning its focus to underground development, placing it in a secondary position to Jiama.

The polymetallic nature of the assets, which include copper, gold, silver, and molybdenum, provides natural revenue diversification. By-product credits from gold, silver, and moly are substantial, leading to an extremely low, often negative, copper AISC.