| Vendor | Spec | Unit | Price | Currency | Date | 
                    
                        |  | China national standards | MT | 4320.0 | USD | 20190321 | 
                    
                        |  | China national standards | MT | 2960.0 | USD | 20190321 | 
                    
                        |  | China national standards | MT | 470.0 | USD | 20190319 | 
                    
                        |  | China national standards | MT | 890.0 | USD | 20190318 | 
                    
                        |  | China national standards | MT | 3150.0 | USD | 20190317 | 
                    
                        |  | China national standards | MT | 6030.0 | USD | 20190314 | 
                    
                        |  | China national standards | MT | 470.0 | USD | 20190314 | 
                    
                        |  | China national standards | MT | 640.0 | USD | 20190312 | 
                    
                        |  | China national standards | MT | 430.0 | USD | 20190311 | 
                    
                        |  | China national standards | MT | 3220.0 | USD | 20190311 |