China Minmetals Corporation Science and Technology Special Plan 2026 'Open Competition' Project: Efficient Flotation of High-Temperature Carbon-Bearing Fine-Grained Lead-Zinc Ore and Recovery of Associated Precious and Rare Metals

[Tender Notice] China Minmetals Corporation Science and Technology Special Plan 2026 'Open Competition' Project: Efficient Flotation of High-Temperature Carbon-Bearing Fine-Grained Lead-Zinc Ore and Recovery of Associated Precious and Rare Metals Purchasing Unit: China Minmetals Group Co., Ltd. Agency: 五矿国际招标有限责任公司 Region: Dongcheng District, Beijing Project No.: WKZB2641BJA4005209/1 Published: 2026-07-15 Bid Deadline: 2026-07-27 Bid Opening: 2026-07-27