| Vendor | Spec | Unit | Price | Currency | Date |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1054.44 | USD | 20250920 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 956.02 | USD | 20250920 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 885.73 | USD | 20250920 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 1054.44 | USD | 20250920 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250920 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250920 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1110.67 | USD | 20250920 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1237.21 | USD | 20250920 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250920 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 871.67 | USD | 20250920 |