| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 946.61 | USD | 20251127 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 918.13 | USD | 20251126 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 931.86 | USD | 20251125 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 917.74 | USD | 20251125 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.98 | USD | 20251125 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.7 | USD | 20251124 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 917.47 | USD | 20251124 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 945.33 | USD | 20251121 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 917.11 | USD | 20251121 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 916.72 | USD | 20251120 |