| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.77 | USD | 20250920 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.77 | USD | 20250919 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.77 | USD | 20250919 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 422.03 | USD | 20250918 |