| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 632.37 | USD | 20250825 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 632.37 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 404.72 | USD | 20250825 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1039.9 | USD | 20250825 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250824 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.68 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.95 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.95 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.81 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.95 | USD | 20250822 |