| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Qirun Chem | China national standards | MT | 1005.19 | USD | 20260327 |
| Dongying Qirun Chem | China national standards | MT | 1013.67 | USD | 20260326 |
| Dongying Qirun Chem | China national standards | MT | 1073.85 | USD | 20260325 |
| Dongying Qirun Chem | China national standards | MT | USD | 20260313 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260312 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260311 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260310 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260306 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260305 | |
| Dongying Qirun Chem | China national standards | MT | USD | 20260304 |