| Vendor | Spec | Unit | Price | Currency | Date |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.9 | USD | 20251106 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.58 | USD | 20251105 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.88 | USD | 20251103 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.77 | USD | 20251102 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.77 | USD | 20251031 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.91 | USD | 20251030 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 621.09 | USD | 20251029 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.98 | USD | 20251028 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.76 | USD | 20251027 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 620.35 | USD | 20251025 |