[Competitive Negotiation] Procurement Announcement for Value Assessment Service of Equipment and Facilities for Gaofengshan Underground Concrete Filling Preparation System [Datun Tin Mine]

[Tender Notice] [Competitive Negotiation] Procurement Announcement for Value Assessment Service of Equipment and Facilities for Gaofengshan Underground Concrete Filling Preparation System [Datun Tin Mine] Purchasing Unit: Yunnan Tin Co., Ltd. Datun Tin Mine Region: Honghe County, Honghe Hani and Yi Autonomous Prefecture, Yunnan Project No.: 1109-ZY-2608-25852 Published: 2026-08-17 Bid Deadline: 2026-08-24 Bid Opening: 2026-08-24