China Railway Construction Group Beijing Engineering Co., Ltd. Beijing Suburban Railway Northeast Ring Line Project ZF-2 Thermally Broken Aluminum Alloy Window Category Negotiated Procurement Announcement

[Tender Notice] China Railway Construction Group Beijing Engineering Co., Ltd. Beijing Suburban Railway Northeast Ring Line Project ZF-2 Thermally Broken Aluminum Alloy Window Category Negotiated Procurement Announcement Purchasing Unit: China Railway Construction Group North China Engineering Co., Ltd. Region: Binhai New Area, Tianjin Published: 2026-08-14 Document Deadline: 2026-08-17 Bid Deadline: 2026-08-18 Bid Opening: 2026-08-18