| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1292.8 | USD | 20250521 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1292.91 | USD | 20250520 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1293.18 | USD | 20250519 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1292.33 | USD | 20250515 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1292.46 | USD | 20250514 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1291.83 | USD | 20250513 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1290.48 | USD | 20250512 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1289.96 | USD | 20250509 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1290.36 | USD | 20250508 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1291.58 | USD | 20250507 |