| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 636.02 | USD | 20251210 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.84 | USD | 20251209 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 607.58 | USD | 20251209 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 607.65 | USD | 20251208 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.92 | USD | 20251208 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 636.05 | USD | 20251205 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.96 | USD | 20251201 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 607.7 | USD | 20251201 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 607.52 | USD | 20251127 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.78 | USD | 20251127 |