| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 256.14 | USD | 20251008 |
| Qingdao Shengze Chem | China national standards | MT | 256.14 | USD | 20251004 |
| Qingdao Shengze Chem | China national standards | MT | 256.14 | USD | 20251004 |
| Qingdao Shengze Chem | China national standards | MT | 256.14 | USD | 20250930 |
| Qingdao Shengze Chem | China national standards | MT | 256.14 | USD | 20250930 |
| Qingdao Shengze Chem | China national standards | MT | 256.02 | USD | 20250929 |
| Qingdao Shengze Chem | China national standards | MT | 256.02 | USD | 20250929 |
| Qingdao Shengze Chem | China national standards | MT | 255.79 | USD | 20250928 |
| Qingdao Shengze Chem | China national standards | MT | 255.79 | USD | 20250927 |
| Qingdao Shengze Chem | China national standards | MT | 255.79 | USD | 20250927 |