| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 777.35 | USD | 20251210 |
| Nantong Zhonghe Chem | China national standards | MT | 848.02 | USD | 20251210 |
| Shandong Huize Chem | China national standards | MT | 848.02 | USD | 20251210 |
| Shanghai Juexin | China national standards | MT | 1342.7 | USD | 20251210 |
| Shanghai Juexin | China national standards | MT | 989.36 | USD | 20251210 |
| Qingdao Shengze Chem | China national standards | MT | 777.35 | USD | 20251210 |
| Qingdao Shengze Chem | China national standards | MT | 777.35 | USD | 20251210 |
| Qingdao Shengze Chem | China national standards | MT | 777.35 | USD | 20251210 |
| Qingdao Shengze Chem | China national standards | MT | 777.35 | USD | 20251210 |
| Shandong Daoqin Chem | China national standards | MT | 989.08 | USD | 20251209 |