| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.19 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.79 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1196.12 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.01 | USD | 20250828 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.19 | USD | 20250828 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1082.86 | USD | 20250827 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 956.29 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 984.42 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1209.43 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1209.43 | USD | 20250827 |