| Vendor | Spec | Unit | Price | Currency | Date |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| Xiamen Yudeshun Chemical Products Co., Ltd. | China national standards | MT | 1265.32 | USD | 20250919 |
| Xiamen Yudeshun Chemical Products Co., Ltd. | China national standards | MT | 1265.32 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1110.67 | USD | 20250919 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1110.67 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1103.64 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |