| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 633.85 | USD | 20251015 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 605.57 | USD | 20251013 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 633.74 | USD | 20251013 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 605.22 | USD | 20251011 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 633.37 | USD | 20251011 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 604.76 | USD | 20251009 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 632.89 | USD | 20251009 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 633.01 | USD | 20250929 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 604.88 | USD | 20250929 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 604.34 | USD | 20250926 |