| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1245.77 | USD | 20251101 |
| Shandong Mingyu | China national standards | MT | 1128.67 | USD | 20251101 |
| Shandong Aite Chem | China national standards | MT | 1156.88 | USD | 20251101 |
| Shandong Mingyu | China national standards | MT | 1128.67 | USD | 20251031 |
| Shandong Junfeng | China national standards | MT | 1128.67 | USD | 20251031 |
| Jinan Pulaihua Chem | China national standards | MT | 1199.21 | USD | 20251031 |
| Shandong Aite Chem | China national standards | MT | 1156.88 | USD | 20251031 |
| Shandong Langchem | China national standards | MT | 1245.77 | USD | 20251031 |
| Jinan Pulaihua Chem | China national standards | MT | 1199.21 | USD | 20251031 |
| Shandong Yeyang Chem | China national standards | MT | 1269.75 | USD | 20251031 |