| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.67 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.36 | USD | 20250816 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1036.84 | USD | 20250816 |
| China national standards | MT | 60.0 | USD | 20210323 | |
| China national standards | MT | 80.0 | USD | 20210323 | |
| China national standards | MT | 70.0 | USD | 20210323 | |
| China national standards | MT | 60.0 | USD | 20210323 | |
| China national standards | MT | 60.0 | USD | 20210323 |