| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.28 | USD | 20250815 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.39 | USD | 20250813 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.05 | USD | 20250812 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.12 | USD | 20250811 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.23 | USD | 20250808 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.41 | USD | 20250807 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.16 | USD | 20250804 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.6 | USD | 20250801 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 349.67 | USD | 20250801 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.62 | USD | 20250731 |