| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 478.39 | USD | 20250901 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 422.11 | USD | 20250901 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 422.36 | USD | 20250829 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 478.67 | USD | 20250829 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 478.15 | USD | 20250827 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 421.89 | USD | 20250827 |