| Vendor | Spec | Unit | Price | Currency | Date |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1054.44 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1097.28 | USD | 20250918 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1097.28 | USD | 20250918 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1055.07 | USD | 20250918 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1012.87 | USD | 20250918 |