| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | China national standards | MT | 7770.0 | USD | 20210317 |
| Unknown | China national standards | MT | 7770.0 | USD | 20210315 |
| Unknown | China national standards | MT | 49970.0 | USD | 20210310 |
| Unknown | China national standards | MT | USD | 20210301 | |
| Unknown | China national standards | MT | USD | 20201211 | |
| Unknown | China national standards | MT | USD | 20201201 | |
| Unknown | China national standards | MT | USD | 20201118 | |
| Unknown | China national standards | MT | USD | 20201101 | |
| Unknown | China national standards | MT | USD | 20201021 | |
| Unknown | China national standards | MT | USD | 20201020 |