| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 951.1 | USD | 20250801 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1188.88 | USD | 20250801 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 965.09 | USD | 20250801 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.08 | USD | 20250801 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.08 | USD | 20250801 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.08 | USD | 20250801 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.1 | USD | 20250731 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.1 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1293.81 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 979.1 | USD | 20250731 |