| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.69 | USD | 20251105 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.48 | USD | 20251105 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.62 | USD | 20251104 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.83 | USD | 20251104 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.77 | USD | 20251103 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.66 | USD | 20251031 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.02 | USD | 20251030 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.8 | USD | 20251030 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 635.09 | USD | 20251028 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.33 | USD | 20251023 |