| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1083.21 | USD | 20250918 |
| Shandong Tongzhou Chemical Co., Ltd. | China national standards | MT | 1406.77 | USD | 20250918 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 1097.28 | USD | 20250918 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1253.04 | USD | 20250916 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1252.53 | USD | 20250915 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1253.19 | USD | 20250913 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1253.19 | USD | 20250912 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1252.92 | USD | 20250911 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1252.43 | USD | 20250910 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1253.38 | USD | 20250909 |