| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.87 | USD | 20251010 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.36 | USD | 20250926 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.83 | USD | 20250925 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.83 | USD | 20250924 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.83 | USD | 20250923 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |