| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 857.61 | USD | 20250919 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 858.13 | USD | 20250918 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 900.33 | USD | 20250918 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 900.33 | USD | 20250918 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 1125.41 | USD | 20250918 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 1026.94 | USD | 20250918 |
| Henan Saiteng Environmental Protection Technology Co., Ltd. | 85% | MT | 956.6 | USD | 20250918 |