| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Pulaihua Chem | China national standards | MT | 1201.26 | USD | 20251201 |
| Shandong Yeyang Chem | China national standards | MT | 1271.92 | USD | 20251201 |
| Shandong Mingyu | China national standards | MT | 1130.6 | USD | 20251201 |
| Shandong Aite Chem | China national standards | MT | 1158.37 | USD | 20251129 |
| Shandong Mingyu | China national standards | MT | 1130.12 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1247.37 | USD | 20251129 |
| Shandong Yeyang Chem | China national standards | MT | 1271.38 | USD | 20251128 |
| Shandong Aite Chem | China national standards | MT | 1158.37 | USD | 20251128 |
| Shandong Aite Chem | China national standards | MT | 1158.37 | USD | 20251128 |
| Shandong Junfeng | China national standards | MT | 1130.12 | USD | 20251128 |