| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 239.08 | USD | 20250922 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 225.02 | USD | 20250922 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 239.01 | USD | 20250919 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 224.95 | USD | 20250919 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 225.08 | USD | 20250918 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 239.15 | USD | 20250918 |