| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 1075.86 | USD | 20250922 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 1075.53 | USD | 20250920 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 1075.53 | USD | 20250919 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 1076.18 | USD | 20250918 |