W4 China Nuclear Construction CNNC 22 Northwest Zhongguancun Aviation Science and Technology Park Plot E Project Aluminum Alloy Door and Window Materials Regular Procurement Notice

[Tender Notice] W4 China Nuclear Construction CNNC 22 Northwest Zhongguancun Aviation Science and Technology Park Plot E Project Aluminum Alloy Door and Window Materials Regular Procurement Notice Purchasing Unit: China Nuclear Industry 22 Construction Co., Ltd. Region: Beijing, Haidian District Project No.: CNEC-XJD-26-12135 Published: 2026-07-22 Document Deadline: 2026-08-05 Bid Deadline: 2026-08-05