| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 635.3 | USD | 20251112 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 635.27 | USD | 20251108 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 635.01 | USD | 20251106 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.69 | USD | 20251105 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.83 | USD | 20251104 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.99 | USD | 20251103 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.88 | USD | 20251031 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 635.02 | USD | 20251030 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.87 | USD | 20251027 |
| Guangzhou Zhan'en Chemical Co., Ltd. | China national standards | MT | 634.45 | USD | 20251024 |