CNGR Advanced Material Co., Ltd. Raw Material Plant Area - Public Inquiry for Outsourced Polishing of No. 57 Cobalt Sulfate Magnesium Solution Tank to be Converted into Manganese Sulfate Finished Product Tank

[Tender Notice] CNGR Advanced Material Co., Ltd. Raw Material Plant Area - Public Inquiry for Outsourced Polishing of No. 57 Cobalt Sulfate Magnesium Solution Tank to be Converted into Manganese Sulfate Finished Product Tank Purchasing Unit: CNGR Advanced Materials Co., Ltd. Region: Yuping Dong Autonomous County, Tongren, Guizhou Project No.: PE202608190061 Published: 2026-08-19 Bid Deadline: 2026-08-22