| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chem | China national standards | MT | 389.69 | USD | 20251114 |
| Nantong Zhonghe Chem | China national standards | MT | 389.47 | USD | 20251111 |
| Nantong Zhonghe Chem | China national standards | MT | 389.52 | USD | 20251110 |
| Nantong Zhonghe Chem | China national standards | MT | 389.63 | USD | 20251107 |
| Nantong Zhonghe Chem | China national standards | MT | 389.47 | USD | 20251106 |
| Nantong Zhonghe Chem | China national standards | MT | 389.28 | USD | 20251105 |
| Nantong Zhonghe Chem | China national standards | MT | 389.36 | USD | 20251104 |
| Nantong Zhonghe Chem | China national standards | MT | 389.46 | USD | 20251103 |
| Nantong Zhonghe Chem | China national standards | MT | 389.39 | USD | 20251031 |
| Nantong Zhonghe Chem | China national standards | MT | 389.48 | USD | 20251030 |