| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.18 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.18 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 815.66 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.66 | USD | 20250827 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 646.9 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.35 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 843.79 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 942.23 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 907.07 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.04 | USD | 20250827 |