| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.39 | USD | 20251117 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.34 | USD | 20251114 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.12 | USD | 20251113 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.3 | USD | 20251112 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.12 | USD | 20251106 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.92 | USD | 20251105 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.01 | USD | 20251104 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.11 | USD | 20251103 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.03 | USD | 20251031 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 395.12 | USD | 20251030 |