| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 536.3 | USD | 20251028 |
| Shandong Yihe Chem | China national standards | MT | 514.95 | USD | 20251027 |
| Shandong Yihe Chem | China national standards | MT | 536.11 | USD | 20251027 |
| Shandong Yihe Chem | China national standards | MT | 514.61 | USD | 20251024 |
| Shandong Yihe Chem | China national standards | MT | 535.75 | USD | 20251024 |
| Shandong Yihe Chem | China national standards | MT | 528.78 | USD | 20251023 |
| Shandong Yihe Chem | China national standards | MT | 535.83 | USD | 20251023 |
| Shandong Yihe Chem | China national standards | MT | 528.51 | USD | 20251022 |
| Shandong Yihe Chem | China national standards | MT | 535.56 | USD | 20251022 |
| Shandong Yihe Chem | China national standards | MT | 535.74 | USD | 20251021 |