| Vendor | Spec | Unit | Price | Currency | Date | 
                    
                        |  | China national standards | MT | 8190.0 | USD | 20190120 | 
                    
                        |  | China national standards | MT | 8080.0 | USD | 20190101 | 
                    
                        |  | China national standards | MT | 1170.0 | USD | 20190101 | 
                    
                        |  | China national standards | MT | 1170.0 | USD | 20190101 | 
                    
                        |  | China national standards | MT | 7870.0 | USD | 20181223 | 
                    
                        |  | China national standards | MT | 7810.0 | USD | 20181222 | 
                    
                        |  | China national standards | MT | 1450.0 | USD | 20181220 | 
                    
                        |  | China national standards | MT | 7870.0 | USD | 20181219 | 
                    
                        |  | China national standards | MT | 1450.0 | USD | 20181218 | 
                    
                        |  | China national standards | MT | 1120.0 | USD | 20181217 |