| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 998.2 | USD | 20250919 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1110.67 | USD | 20250919 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 956.02 | USD | 20250919 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1082.56 | USD | 20250919 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1082.56 | USD | 20250919 |
| China national standards | MT | 1103.64 | USD | 20250919 | |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250919 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250919 |