| Vendor | Spec | Unit | Price | Currency | Date | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.33 | USD | 20251013 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.1 | USD | 20251011 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 393.8 | USD | 20251009 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 393.87 | USD | 20250929 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 393.52 | USD | 20250926 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.05 | USD | 20250925 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.05 | USD | 20250924 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.05 | USD | 20250923 | 
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 393.89 | USD | 20250918 |