| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhiheng | China national standards | MT | 657.68 | USD | 20251013 |
| Binzhou Dayou Energy | China national standards | MT | 657.68 | USD | 20251013 |
| Shandong Zhiheng | China national standards | MT | 657.3 | USD | 20251011 |
| Wuhan Hengjiu Chem | China national standards | MT | 657.3 | USD | 20251010 |
| Binzhou Dayou Energy | China national standards | MT | 656.8 | USD | 20251009 |
| Shandong Zhiheng | China national standards | MT | 656.8 | USD | 20251009 |
| Binzhou Dayou Energy | China national standards | MT | 657.24 | USD | 20251008 |
| Binzhou Dayou Energy | China national standards | MT | 657.24 | USD | 20251006 |
| Binzhou Dayou Energy | China national standards | MT | 657.24 | USD | 20251005 |
| Binzhou Dayou Energy | China national standards | MT | 657.24 | USD | 20251004 |