Questcorp Mining and Riverside Resources Advance Toward Drilling with Expanded IP Survey at La Union Project, Sonora, Mexico

Vancouver, British Columbia--(Newsfile Corp. - June 2, 2026) - Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910) (the "Company" or "Questcorp") is pleased to provide an update on ongoing exploration activities at the La Union Gold-Silver Project in Sonora, Mexico, where the Company and its technical partner, Riverside Resources, have completed an expanded induced polarization ("IP") geophysical survey designed to further refine drill targets ahead of the Company's fully funded Phase 2 drill program. Five IP lines were strategically positioned across key high-priority target areas identified through recent geological mapping, geochemical sampling, historical drilling, underground mine investigations, and the Company's successful 2026 exploration campaign.