| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 393.66 | USD | 20250920 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 421.77 | USD | 20250920 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 421.77 | USD | 20250919 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 393.66 | USD | 20250919 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 422.03 | USD | 20250918 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 393.89 | USD | 20250918 |