Sales Project Announcement for a Batch of Waste Materials of Shaanxi Yanchang Petroleum Materials Co., Ltd. (1,573 Items Including Waste Valves and Waste Ball Valves from No.1 Gas Production Plant of Yanchang Gas Field)

[Tender Notice] Sales Project Announcement for a Batch of Waste Materials of Shaanxi Yanchang Petroleum Materials Co., Ltd. (1,573 Items Including Waste Valves and Waste Ball Valves from No.1 Gas Production Plant of Yanchang Gas Field) Purchasing Unit: Shaanxi Yanchang Petroleum Materials Co., Ltd. Region: Yanchang County, Yan'an, Shaanxi Published: 2026-08-10 Bid Opening: 2026-08-19