| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1131.77 | USD | 20251211 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1018.59 | USD | 20251211 |
| Pingxiang Lixin Biochemical High Tech Co., Ltd. | China national standards | MT | 1082.25 | USD | 20251211 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1032.74 | USD | 20251211 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 962.0 | USD | 20251211 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1061.03 | USD | 20251211 |
| Shandong Longhui Chemical Co., Ltd. | China national standards | MT | 1046.88 | USD | 20251211 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 933.71 | USD | 20251211 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 778.09 | USD | 20251211 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1131.77 | USD | 20251211 |