| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 233.14 | USD | 20251209 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 247.32 | USD | 20251201 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 268.09 | USD | 20251119 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 261.06 | USD | 20251111 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 282.15 | USD | 20251104 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 239.84 | USD | 20251027 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 288.84 | USD | 20251020 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 239.37 | USD | 20251014 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Nanjing Daoyi Chemical Technology Co., Ltd. | China national standards | MT | 295.55 | USD | 20250930 |