| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chem | China national standards | MT | 388.91 | USD | 20251016 |
| Nantong Zhonghe Chem | China national standards | MT | 388.76 | USD | 20251015 |
| Nantong Zhonghe Chem | China national standards | MT | 388.62 | USD | 20251014 |
| Nantong Zhonghe Chem | China national standards | MT | 388.69 | USD | 20251013 |
| Nantong Zhonghe Chem | China national standards | MT | 388.47 | USD | 20251011 |
| Nantong Zhonghe Chem | China national standards | MT | 388.47 | USD | 20251010 |
| Nantong Zhonghe Chem | China national standards | MT | 388.17 | USD | 20251009 |
| Nantong Zhonghe Chem | China national standards | MT | 388.43 | USD | 20250930 |
| Nantong Zhonghe Chem | China national standards | MT | 388.25 | USD | 20250929 |
| Nantong Zhonghe Chem | China national standards | MT | 387.9 | USD | 20250928 |