| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 805.21 | USD | 20251128 |
| Shandong Yihe Chem | China national standards | MT | 798.26 | USD | 20251127 |
| Shandong Yihe Chem | China national standards | MT | 805.32 | USD | 20251127 |
| Shandong Yihe Chem | China national standards | MT | 798.07 | USD | 20251126 |
| Shandong Yihe Chem | China national standards | MT | 805.13 | USD | 20251126 |
| Shandong Yihe Chem | China national standards | MT | 797.73 | USD | 20251125 |
| Shandong Yihe Chem | China national standards | MT | 804.55 | USD | 20251124 |
| Shandong Yihe Chem | China national standards | MT | 797.49 | USD | 20251124 |
| Shandong Yihe Chem | China national standards | MT | 804.23 | USD | 20251123 |
| Shandong Yihe Chem | China national standards | MT | 797.18 | USD | 20251123 |