| Vendor | 
                        Spec | 
                        Unit | 
                        Price | 
                        Currency | 
                        Date | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        510.0 | 
                        USD | 
                        20200419 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        470.0 | 
                        USD | 
                        20200419 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        3660.0 | 
                        USD | 
                        20200418 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        530.0 | 
                        USD | 
                        20200418 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        520.0 | 
                        USD | 
                        20200418 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        3360.0 | 
                        USD | 
                        20200417 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        500.0 | 
                        USD | 
                        20200417 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        3780.0 | 
                        USD | 
                        20200416 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        3700.0 | 
                        USD | 
                        20200415 | 
                    
                    
                         | 
                        China national standards | 
                        MT | 
                        510.0 | 
                        USD | 
                        20200415 |