| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.44 | USD | 20250821 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.44 | USD | 20250821 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 532.33 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.26 | USD | 20250820 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.32 | USD | 20250819 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 532.52 | USD | 20250819 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.35 | USD | 20250818 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.38 | USD | 20250818 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.38 | USD | 20250818 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 532.79 | USD | 20250818 |