| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 940.78 | USD | 20251211 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 954.93 | USD | 20251211 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 939.89 | USD | 20251210 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 925.49 | USD | 20251209 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 960.82 | USD | 20251209 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 925.61 | USD | 20251208 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 926.02 | USD | 20251204 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 925.22 | USD | 20251202 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 961.01 | USD | 20251201 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 925.29 | USD | 20251128 |