| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Yaohe Chem | China national standards | MT | 6560.34 | USD | 20260421 |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260401 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260323 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260320 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260316 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260303 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260126 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260114 | |
| Weifang Yaohe Chem | China national standards | MT | USD | 20260104 | |
| Weifang Yaohe Chem | Industrial Grade | MT | USD | 20251029 |