| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Baoxin Environmental Protection Technology Co., Ltd. | China national standards | MT | 137.86 | USD | 20250918 |
| Hubei Shuanghuan Science and Technology Stock Co., Ltd. | China national standards | MT | 168.81 | USD | 20250918 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 123.8 | USD | 20250918 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.57 | USD | 20250918 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.9 | USD | 20250916 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 535.01 | USD | 20250916 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.78 | USD | 20250916 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.74 | USD | 20250915 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.85 | USD | 20250915 |
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 534.79 | USD | 20250915 |