| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 350.34 | USD | 20250819 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.44 | USD | 20250819 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.61 | USD | 20250819 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.61 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 399.39 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.59 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 448.44 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 392.59 | USD | 20250818 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Qiancheng New Materials Co., Ltd. | 90% | MT | 392.59 | USD | 20250818 |