| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1075.18 | USD | 20251211 |
| Shandong Yihe Chem | China national standards | MT | 1074.16 | USD | 20251210 |
| Shandong Yihe Chem | China national standards | MT | 1073.86 | USD | 20251209 |
| Shandong Yihe Chem | China national standards | MT | 1073.86 | USD | 20251209 |
| Shandong Yihe Chem | China national standards | MT | 1081.06 | USD | 20251208 |
| Shandong Yihe Chem | China national standards | MT | 1081.29 | USD | 20251207 |
| Shandong Yihe Chem | China national standards | MT | 1081.29 | USD | 20251205 |
| Shandong Yihe Chem | China national standards | MT | 1081.53 | USD | 20251204 |
| Shandong Yihe Chem | China national standards | MT | 1081.21 | USD | 20251203 |
| Shandong Yihe Chem | China national standards | MT | 1080.6 | USD | 20251202 |