| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Yulin Chem | China national standards | MT | 289.83 | USD | 20260305 |
| Yankuang Yulin Chem | China national standards | MT | 285.0 | USD | 20260304 |
| Shandong Energy | China national standards | MT | 306.23 | USD | 20260228 |
| Yankuang Yulin Chem | China national standards | MT | 260.75 | USD | 20260224 |
| Unknown | China national standards | MT | 319.53 | USD | 20260224 |
| Yankuang Guohong Chem | China national standards | MT | 305.22 | USD | 20260212 |
| Shandong Energy | China national standards | MT | 306.75 | USD | 20260211 |
| Yankuang Guohong Chem | China national standards | MT | 305.22 | USD | 20260210 |
| Yankuang Yulin Chem | China national standards | MT | 263.22 | USD | 20260209 |
| Yankuang Guohong Chem | China national standards | MT | 304.64 | USD | 20260206 |