| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 942.71 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.21 | USD | 20250901 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 844.21 | USD | 20250901 |
| Shandong Fushengyong Trading Co., Ltd. | Industrial Grade | MT | 900.5 | USD | 20250901 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 900.5 | USD | 20250901 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.61 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.56 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.56 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250830 |