| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | China national standards | MT | 3420.0 | USD | 20190616 |
| Unknown | China national standards | MT | 510.0 | USD | 20190613 |
| Unknown | China national standards | MT | 510.0 | USD | 20190601 |
| Unknown | China national standards | MT | 3420.0 | USD | 20190601 |
| Unknown | China national standards | MT | 1590.0 | USD | 20190517 |
| Unknown | China national standards | MT | 1600.0 | USD | 20190515 |
| Unknown | China national standards | MT | 1680.0 | USD | 20190512 |
| Unknown | China national standards | MT | 11280.0 | USD | 20190511 |
| Unknown | China national standards | MT | 10940.0 | USD | 20190501 |
| Unknown | China national standards | MT | 11390.0 | USD | 20190501 |