Tangshan Longyue Renewable Resources Comprehensive Utilization Co., Ltd. metallurgical solid waste resource utilization and high-end castings project 110kV main step-down substation EPC general contracting project - video surveillance and intelligent auxiliary systems

[Tender Notice] Tangshan Longyue Renewable Resources Comprehensive Utilization Co., Ltd. metallurgical solid waste resource utilization and high-end castings project 110kV main step-down substation EPC general contracting project - video surveillance and intelligent auxiliary systems Purchasing Unit: Tangshan Longyue Recycling Resources Comprehensive Utilization Co., Ltd. Region: Caofeidian District, Tangshan, Hebei Published: 2026-08-24