| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 931.26 | USD | 20251119 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 910.09 | USD | 20251119 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 917.35 | USD | 20251118 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 910.81 | USD | 20251117 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.99 | USD | 20251114 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 910.18 | USD | 20251113 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.89 | USD | 20251112 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 924.71 | USD | 20251112 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 931.34 | USD | 20251111 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.45 | USD | 20251111 |