| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1168.54 | USD | 20250908 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1167.96 | USD | 20250905 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1167.96 | USD | 20250905 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1168.16 | USD | 20250904 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1168.16 | USD | 20250904 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1167.83 | USD | 20250901 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1167.83 | USD | 20250901 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1168.52 | USD | 20250829 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1168.52 | USD | 20250829 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1195.36 | USD | 20250827 |