| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Linglin New Material Co., Ltd. | China national standards | MT | 1521.23 | USD | 20251015 |
| Shandong Linglin New Material Co., Ltd. | China national standards | MT | 1520.1 | USD | 20251011 |
| Shandong Linglin New Material Co., Ltd. | China national standards | MT | 1517.88 | USD | 20250926 |
| Shandong Linglin New Material Co., Ltd. | China national standards | MT | 1659.49 | USD | 20250922 |
| Shandong Linglin New Material Co., Ltd. | China national standards | MT | 1659.98 | USD | 20250918 |