| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | China national standards | MT | 10.0 | USD | 20200718 |
| Unknown | China national standards | MT | 100.0 | USD | 20200713 |
| Unknown | China national standards | MT | 10.0 | USD | 20200701 |
| Unknown | China national standards | MT | 100.0 | USD | 20200701 |
| Unknown | China national standards | MT | 40.0 | USD | 20200523 |
| Unknown | China national standards | MT | 20.0 | USD | 20200523 |
| Unknown | China national standards | MT | 300.0 | USD | 20200522 |
| Unknown | China national standards | MT | 20.0 | USD | 20200521 |
| Unknown | China national standards | MT | 110.0 | USD | 20200520 |
| Unknown | China national standards | MT | 60.0 | USD | 20200519 |