| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guohong Chem | China national standards | MT | 304.64 | USD | 20260206 |
| Yankuang Yulin Chem | China national standards | MT | 256.18 | USD | 20260130 |
| Yankuang Guohong Chem | China national standards | MT | 302.04 | USD | 20260127 |
| Yankuang Guohong Chem | China national standards | MT | 303.16 | USD | 20260123 |
| Shandong Energy | China national standards | MT | 306.8 | USD | 20260116 |
| Shandong Energy | China national standards | MT | 308.12 | USD | 20260113 |
| Shandong Energy | China national standards | MT | 308.12 | USD | 20260113 |
| Shandong Energy | China national standards | MT | 264.59 | USD | 20260112 |
| Shandong Energy | China national standards | MT | 264.59 | USD | 20260112 |
| Shandong Energy | China national standards | MT | 304.14 | USD | 20260109 |