| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Lixin Shengshi New Material Technology Co., Ltd. | China national standards | MT | 1070.11 | USD | 20251014 |
| WENTONG Potassium Salt Group Co., Ltd. | China national standards | MT | 1126.43 | USD | 20251014 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1126.43 | USD | 20251014 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1126.43 | USD | 20251014 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1126.43 | USD | 20251014 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1098.27 | USD | 20251014 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 901.14 | USD | 20251014 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 887.06 | USD | 20251014 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 943.38 | USD | 20251014 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 957.46 | USD | 20251014 |