| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 980.32 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1190.39 | USD | 20250811 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1064.69 | USD | 20250810 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1064.69 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.79 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1169.76 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1190.78 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.56 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.79 | USD | 20250809 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1204.79 | USD | 20250809 |