| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 840.52 | USD | 20250820 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 840.52 | USD | 20250820 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 841.26 | USD | 20250818 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 841.26 | USD | 20250818 |