| Vendor | Spec | Unit | Price | Currency | Date |
| Linyi Haoxuan New Materials Co., Ltd. | China national standards | MT | 1380.38 | USD | 20251015 |
| Linyi Haoxuan New Materials Co., Ltd. | China national standards | MT | 1379.35 | USD | 20251011 |
| Linyi Haoxuan New Materials Co., Ltd. | China national standards | MT | 1377.33 | USD | 20250926 |
| Linyi Haoxuan New Materials Co., Ltd. | China national standards | MT | 1378.22 | USD | 20250922 |
| Linyi Haoxuan New Materials Co., Ltd. | China national standards | MT | 1378.63 | USD | 20250918 |