| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chem | China national standards | MT | 918.13 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 819.26 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 819.26 | USD | 20251126 |
| Wanhua Chem | China national standards | MT | 1031.13 | USD | 20251126 |
| Wanhua Chem | China national standards | MT | 1045.26 | USD | 20251126 |
| Wanhua Chem | China national standards | MT | 1073.51 | USD | 20251126 |
| Sinopec | China national standards | MT | 791.01 | USD | 20251126 |
| Sinopec | China national standards | MT | 791.01 | USD | 20251126 |
| Sinopec | China national standards | MT | 791.01 | USD | 20251126 |
| Wanhua Yantai | China national standards | MT | 826.32 | USD | 20251126 |