| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 2152.75 | USD | 20250901 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 914.57 | USD | 20250901 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 745.72 | USD | 20250901 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 914.57 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 816.07 | USD | 20250901 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 914.57 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 865.83 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.56 | USD | 20250831 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 844.71 | USD | 20250831 |