| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Guoke E-commerce Co., Ltd. | China national standards | MT | 632.86 | USD | 20250922 |
| Shanghai Guoke E-commerce Co., Ltd. | China national standards | MT | 632.66 | USD | 20250919 |
| Shanghai Guoke E-commerce Co., Ltd. | China national standards | MT | 633.04 | USD | 20250918 |