| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 970.61 | USD | 20250902 |
| Shandong Langchem | China national standards | MT | 1062.05 | USD | 20250902 |
| Sinopec | China national standards | MT | 1090.18 | USD | 20250902 |
| Sinopec | China national standards | MT | 1090.44 | USD | 20250901 |
| Shandong Langchem | China national standards | MT | 1062.3 | USD | 20250901 |
| Shandong Langchem | China national standards | MT | 970.85 | USD | 20250901 |
| Sinopec | China national standards | MT | 1097.48 | USD | 20250901 |
| Sinopec | China national standards | MT | 1097.48 | USD | 20250901 |
| Qingdao Shengze Chem | China national standards | MT | 844.71 | USD | 20250831 |
| Qingdao Shengze Chem | China national standards | MT | 844.71 | USD | 20250830 |