| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 958.11 | USD | 20251020 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 951.39 | USD | 20251017 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 972.53 | USD | 20251017 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 972.27 | USD | 20251016 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 944.09 | USD | 20251016 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 950.77 | USD | 20251015 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 950.77 | USD | 20251015 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 950.61 | USD | 20251013 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 950.06 | USD | 20251011 |
| Nanjing Waien Chemical Technology Co., Ltd. | China national standards | MT | 957.1 | USD | 20251011 |