| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.74 | USD | 20250910 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.81 | USD | 20250909 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 535.15 | USD | 20250909 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.93 | USD | 20250909 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.99 | USD | 20250908 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.77 | USD | 20250908 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.89 | USD | 20250908 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.83 | USD | 20250905 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.72 | USD | 20250905 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.73 | USD | 20250905 |