| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.26 | USD | 20250915 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 774.04 | USD | 20250915 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 914.77 | USD | 20250915 |
| Zibo Lishuo Chemical Trading Co., Ltd. | China national standards | MT | 914.77 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.26 | USD | 20250915 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 830.76 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.68 | USD | 20250914 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 844.84 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.81 | USD | 20250909 |