| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | China national standards | MT | 3500.0 | USD | 20190320 |
| Unknown | China national standards | MT | 40.0 | USD | 20190316 |
| Unknown | China national standards | MT | 300.0 | USD | 20190314 |
| Unknown | China national standards | MT | 40.0 | USD | 20190313 |
| Unknown | China national standards | MT | 520.0 | USD | 20190312 |
| Unknown | China national standards | MT | 520.0 | USD | 20190310 |
| Unknown | China national standards | MT | 3510.0 | USD | 20190301 |
| Unknown | China national standards | MT | 300.0 | USD | 20190301 |
| Unknown | China national standards | MT | 2830.0 | USD | 20190223 |
| Unknown | China national standards | MT | 420.0 | USD | 20190218 |