China Railway Fourth Bureau Municipal Engineering Branch aluminum alloy doors and windows, plastic steel doors and windows framework agreement procurement bidding announcement.

[Tender Notice] China Railway Fourth Bureau Municipal Engineering Branch aluminum alloy doors and windows, plastic steel doors and windows framework agreement procurement bidding announcement. Purchasing Unit: China Railway Shanghai Engineering Bureau Group Co., Ltd. Xiangyang Branch Region: Hubei, Xiangyang, Fancheng District Project No.: ZTSJWZ-SZ-2026-003 Published: 2026-08-18 Document Deadline: 2026-08-25 Bid Deadline: 2026-09-02 Bid Opening: 2026-09-02