| Vendor | Spec | Unit | Price | Currency | Date |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1520.1 | USD | 20251011 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1518.94 | USD | 20251009 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1519.95 | USD | 20250930 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1519.22 | USD | 20250929 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1517.88 | USD | 20250928 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1519.91 | USD | 20250925 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1519.91 | USD | 20250923 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1518.86 | USD | 20250922 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1518.39 | USD | 20250919 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1519.31 | USD | 20250918 |