| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.22 | USD | 20251104 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251103 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.26 | USD | 20251103 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.23 | USD | 20251031 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.27 | USD | 20251030 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.51 | USD | 20251030 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.46 | USD | 20251027 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.23 | USD | 20251027 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.1 | USD | 20251024 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.33 | USD | 20251024 |