| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 971.17 | USD | 20251010 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 963.4 | USD | 20251009 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 970.61 | USD | 20250929 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 962.73 | USD | 20250928 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 969.75 | USD | 20250926 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 985.12 | USD | 20250925 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 985.12 | USD | 20250925 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 971.05 | USD | 20250924 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 971.05 | USD | 20250923 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 984.45 | USD | 20250922 |