| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.84 | USD | 20250915 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 352.07 | USD | 20250909 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.85 | USD | 20250904 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.96 | USD | 20250829 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.53 | USD | 20250822 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.52 | USD | 20250818 |