| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | China national standards | MT | 100.0 | USD | 20190601 |
| Unknown | China national standards | MT | 110.0 | USD | 20190601 |
| Unknown | China national standards | MT | 720.0 | USD | 20190523 |
| Unknown | China national standards | MT | 50.0 | USD | 20190522 |
| Unknown | China national standards | MT | 100.0 | USD | 20190522 |
| Unknown | China national standards | MT | 70.0 | USD | 20190521 |
| Unknown | China national standards | MT | 440.0 | USD | 20190520 |
| Unknown | China national standards | MT | 720.0 | USD | 20190520 |
| Unknown | China national standards | MT | 440.0 | USD | 20190519 |
| Unknown | China national standards | MT | 440.0 | USD | 20190519 |