| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.76 | USD | 20251211 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.56 | USD | 20251209 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.58 | USD | 20251208 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.65 | USD | 20251204 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.6 | USD | 20251203 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.52 | USD | 20251128 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.54 | USD | 20251127 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.5 | USD | 20251126 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.38 | USD | 20251124 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.31 | USD | 20251121 |