| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251113 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.35 | USD | 20251112 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.59 | USD | 20251112 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.35 | USD | 20251108 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.58 | USD | 20251108 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.27 | USD | 20251106 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251106 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.41 | USD | 20251105 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 186.18 | USD | 20251105 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 190.45 | USD | 20251104 |