China Minmetals Group Science and Technology Special Plan 2026 'Open Competition' Project: High-Efficiency Flotation of High-Temperature Carbon-Bearing Fine-Grained Lead-Zinc Ore and Recovery of Associated Rare and Precious Metals (Second Call)

[Tender Notice] China Minmetals Group Science and Technology Special Plan 2026 'Open Competition' Project: High-Efficiency Flotation of High-Temperature Carbon-Bearing Fine-Grained Lead-Zinc Ore and Recovery of Associated Rare and Precious Metals (Second Call) Purchasing Unit: China Minmetals Corporation Agency: 五矿国际招标有限责任公司 Region: Dongcheng District, Beijing Industry: Other Project No.: WKZB2641BJV4005421/1 Published: 2026-08-03 Bid Deadline: 2026-08-06 Bid Opening: 2026-08-06