| Vendor | Spec | Unit | Price | Currency | Date |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1238.6 | USD | 20251011 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1237.66 | USD | 20251009 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1238.48 | USD | 20250930 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1237.88 | USD | 20250929 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1236.79 | USD | 20250928 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1238.44 | USD | 20250925 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1238.44 | USD | 20250923 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1237.59 | USD | 20250922 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1237.21 | USD | 20250919 |
| Suzhou Zixu New Materials Co., Ltd. | China national standards | MT | 1237.95 | USD | 20250918 |