| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1169.94 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.97 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.97 | USD | 20250815 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1204.97 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1009.29 | USD | 20250814 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1037.33 | USD | 20250814 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 953.22 | USD | 20250814 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 981.26 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.55 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.55 | USD | 20250814 |