| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 628.98 | USD | 20251205 |
| Jinan Angxin Chem | China national standards | MT | 593.65 | USD | 20251205 |
| Hualu Holdings | China national standards | MT | 678.45 | USD | 20251205 |
| Qingdao Shengze Chem | China national standards | MT | 513.08 | USD | 20251205 |
| Sinopec | China national standards | MT | 579.51 | USD | 20251205 |
| Qingdao Shengze Chem | China national standards | MT | 513.08 | USD | 20251205 |
| Shandong Shuojia Chem | China national standards | MT | 678.45 | USD | 20251205 |
| Qingdao Shengze Chem | China national standards | MT | 513.08 | USD | 20251205 |
| Qingdao Shengze Chem | China national standards | MT | 513.08 | USD | 20251205 |
| Qingdao Shengze Chem | China national standards | MT | 513.08 | USD | 20251205 |