| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Qirun Chem | China national standards | MT | 990.75 | USD | 20260610 |
| Dongying Qirun Chem | China national standards | MT | 990.51 | USD | 20260609 |
| Dongying Qirun Chem | China national standards | MT | 982.43 | USD | 20260608 |
| Dongying Qirun Chem | China national standards | MT | 979.43 | USD | 20260604 |
| Dongying Qirun Chem | China national standards | MT | 978.24 | USD | 20260603 |
| Dongying Qirun Chem | China national standards | MT | USD | 20260602 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260529 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260528 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260527 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260526 |