| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.26 | USD | 20251022 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.04 | USD | 20251022 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.05 | USD | 20251017 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.28 | USD | 20251017 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.15 | USD | 20251015 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 185.93 | USD | 20251015 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.12 | USD | 20251013 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.12 | USD | 20251013 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.01 | USD | 20251011 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.01 | USD | 20251011 |