| Vendor | Spec | Unit | Price | Currency | Date | 
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.38 | USD | 20250818 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.35 | USD | 20250818 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.28 | USD | 20250816 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.28 | USD | 20250815 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.33 | USD | 20250814 | 
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 532.59 | USD | 20250813 | 
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.34 | USD | 20250813 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.31 | USD | 20250813 | 
| Hunan Jianghai Environmental Protection Co., Ltd. | China national standards | MT | 123.34 | USD | 20250813 | 
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.22 | USD | 20250812 |