| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.99 | USD | 20250829 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.99 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.73 | USD | 20250828 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.83 | USD | 20250828 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.74 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.66 | USD | 20250827 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.76 | USD | 20250827 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.4 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.55 | USD | 20250826 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.62 | USD | 20250826 |