| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250919 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1124.73 | USD | 20250919 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 913.85 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1054.44 | USD | 20250919 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 885.73 | USD | 20250919 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 885.73 | USD | 20250919 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 941.96 | USD | 20250919 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 941.96 | USD | 20250919 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 956.02 | USD | 20250919 |