| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.77 | USD | 20250808 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1177.38 | USD | 20250807 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1177.38 | USD | 20250807 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.55 | USD | 20250804 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1176.55 | USD | 20250804 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.89 | USD | 20250801 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.89 | USD | 20250801 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.92 | USD | 20250731 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1174.92 | USD | 20250731 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1175.8 | USD | 20250730 |