| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Longhui Chemical Co., Ltd. | China national standards | MT | 1042.72 | USD | 20251016 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1056.81 | USD | 20251016 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 915.91 | USD | 20251016 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1056.81 | USD | 20251016 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 1000.45 | USD | 20251016 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 986.36 | USD | 20251016 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1028.24 | USD | 20251015 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 915.56 | USD | 20251015 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 901.47 | USD | 20251015 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 901.47 | USD | 20251015 |