| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1232.99 | USD | 20250815 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1233.58 | USD | 20250814 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1233.58 | USD | 20250814 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1219.34 | USD | 20250813 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1219.34 | USD | 20250813 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1204.18 | USD | 20250812 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1204.18 | USD | 20250812 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.39 | USD | 20250811 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.39 | USD | 20250811 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.77 | USD | 20250808 |