| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.84 | USD | 20250908 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.84 | USD | 20250908 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 703.94 | USD | 20250908 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 703.94 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250906 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 703.59 | USD | 20250906 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250906 |