| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.43 | USD | 20251209 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.48 | USD | 20251205 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.38 | USD | 20251202 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.39 | USD | 20251130 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.39 | USD | 20251128 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.38 | USD | 20251126 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.2 | USD | 20251122 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.21 | USD | 20251119 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.24 | USD | 20251118 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 155.33 | USD | 20251117 |