| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying HuataiChem | China national standards | MT | 1072.31 | USD | 20251121 |
| Dongying HuataiChem | China national standards | MT | 1072.31 | USD | 20251121 |
| Shandong Jinwen Chem | China national standards | MT | 1213.4 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1213.4 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1178.13 | USD | 20251121 |
| Wanhua Chem | China national standards | MT | 1340.39 | USD | 20251121 |
| Dongying HuataiChem | China national standards | MT | 1072.31 | USD | 20251121 |
| Shandong Yaowang Chem | China national standards | MT | 1185.19 | USD | 20251121 |
| Qingdao Shengze Chem | China national standards | MT | 1072.31 | USD | 20251121 |
| Qingdao Shengze Chem | China national standards | MT | 1072.31 | USD | 20251121 |