| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 537.59 | USD | 20251211 |
| Shandong Yihe Chem | China national standards | MT | 523.44 | USD | 20251211 |
| Shandong Yihe Chem | China national standards | MT | 537.08 | USD | 20251210 |
| Shandong Yihe Chem | China national standards | MT | 515.88 | USD | 20251210 |
| Shandong Yihe Chem | China national standards | MT | 536.93 | USD | 20251209 |
| Shandong Yihe Chem | China national standards | MT | 515.73 | USD | 20251209 |
| Shandong Yihe Chem | China national standards | MT | 537.0 | USD | 20251208 |
| Shandong Yihe Chem | China national standards | MT | 515.8 | USD | 20251208 |
| Shandong Yihe Chem | China national standards | MT | 515.91 | USD | 20251207 |
| Shandong Yihe Chem | China national standards | MT | 537.11 | USD | 20251207 |