| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.83 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.83 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.56 | USD | 20250419 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.56 | USD | 20250418 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.25 | USD | 20250417 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1386.33 | USD | 20250416 |