| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.33 | USD | 20251023 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.21 | USD | 20251022 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.03 | USD | 20251022 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 605.86 | USD | 20251020 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.04 | USD | 20251020 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.26 | USD | 20251017 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 606.07 | USD | 20251017 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 634.09 | USD | 20251016 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 605.91 | USD | 20251016 |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 605.68 | USD | 20251015 |