| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1096.95 | USD | 20250922 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.38 | USD | 20250922 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1125.08 | USD | 20250922 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1125.08 | USD | 20250922 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.38 | USD | 20250922 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1103.99 | USD | 20250922 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1125.08 | USD | 20250922 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 970.38 | USD | 20250922 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 998.51 | USD | 20250922 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 900.06 | USD | 20250922 |