| Vendor | Spec | Unit | Price | Currency | Date |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 977.41 | USD | 20250922 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 977.11 | USD | 20250919 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 977.7 | USD | 20250918 |