| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 1187.5 | USD | 20251120 |
| Shandong Zhiheng | China national standards | MT | 1170.58 | USD | 20251120 |
| Shandong Yeyang Chem | China national standards | MT | 1241.1 | USD | 20251120 |
| Shandong Hongyang Chem | China national standards | MT | 1121.22 | USD | 20251120 |
| Wanhua Chem | China national standards | MT | 987.24 | USD | 20251120 |
| Shandong Yihe Chem | China national standards | MT | 1057.75 | USD | 20251120 |
| Wanhua Chem | China national standards | MT | 1340.44 | USD | 20251119 |
| Shandong Zhiheng | China national standards | MT | 1128.8 | USD | 20251119 |
| Shandong Zhiheng | China national standards | MT | 1128.8 | USD | 20251119 |
| Shandong Langchem | China national standards | MT | 1199.35 | USD | 20251119 |