| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Shuntian Chem | China national standards | MT | 310.49 | USD | 20251028 |
| Shandong Shuntian Chem | China national standards | MT | 310.38 | USD | 20251027 |
| Shandong Shuntian Chem | China national standards | MT | 310.17 | USD | 20251024 |
| Shandong Shuntian Chem | China national standards | MT | 310.22 | USD | 20251023 |
| Shandong Shuntian Chem | China national standards | MT | 310.06 | USD | 20251022 |
| Shandong Shuntian Chem | China national standards | MT | 310.16 | USD | 20251021 |
| Shandong Shuntian Chem | China national standards | MT | 309.98 | USD | 20251020 |
| Shandong Shuntian Chem | China national standards | MT | 307.26 | USD | 20251017 |
| Shandong Shuntian Chem | China national standards | MT | 307.18 | USD | 20251016 |
| Shandong Shuntian Chem | China national standards | MT | 307.06 | USD | 20251015 |