| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.39 | USD | 20251121 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.44 | USD | 20251119 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1341.5 | USD | 20251117 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1341.33 | USD | 20251114 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.58 | USD | 20251113 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.56 | USD | 20251111 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.58 | USD | 20251106 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.2 | USD | 20251104 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.54 | USD | 20251103 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.29 | USD | 20251031 |