| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1031.76 | USD | 20251210 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1088.29 | USD | 20251210 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1017.62 | USD | 20251210 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1243.76 | USD | 20251210 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1031.76 | USD | 20251210 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 932.82 | USD | 20251210 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 1031.47 | USD | 20251209 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1031.47 | USD | 20251209 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 932.56 | USD | 20251209 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 1031.47 | USD | 20251209 |