| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chem | China national standards | MT | 390.46 | USD | 20251211 |
| Nantong Zhonghe Chem | China national standards | MT | 390.09 | USD | 20251210 |
| Nantong Zhonghe Chem | China national standards | MT | 389.98 | USD | 20251209 |
| Nantong Zhonghe Chem | China national standards | MT | 390.03 | USD | 20251208 |
| Nantong Zhonghe Chem | China national standards | MT | 390.2 | USD | 20251204 |
| Nantong Zhonghe Chem | China national standards | MT | 390.08 | USD | 20251203 |
| Nantong Zhonghe Chem | China national standards | MT | 389.86 | USD | 20251202 |
| Nantong Zhonghe Chem | China national standards | MT | 390.06 | USD | 20251201 |
| Nantong Zhonghe Chem | China national standards | MT | 390.06 | USD | 20251201 |
| Nantong Zhonghe Chem | China national standards | MT | 389.89 | USD | 20251128 |