| Vendor | Spec | Unit | Price | Currency | Date |
| Tianjin STL Energy Technology Co., Ltd. | China national standards | MT | 24645.01 | USD | 20221216 |
| China national standards | MT | 13850.0 | USD | 20210321 | |
| China national standards | MT | 10290.0 | USD | 20210320 | |
| China national standards | MT | 10190.0 | USD | 20210320 | |
| China national standards | MT | 1490.0 | USD | 20210320 | |
| China national standards | MT | 13850.0 | USD | 20210319 | |
| China national standards | MT | 1000.0 | USD | 20210318 | |
| China national standards | MT | 1590.0 | USD | 20210317 | |
| China national standards | MT | 9640.0 | USD | 20210316 | |
| China national standards | MT | 1730.0 | USD | 20210315 |