| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.3 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.08 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.08 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.08 | USD | 20250813 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.26 | USD | 20250813 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1135.25 | USD | 20250813 |
| Dongying Liancheng Chemical Co., Ltd. | China national standards | MT | 1190.18 | USD | 20250812 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 840.12 | USD | 20250812 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1134.17 | USD | 20250812 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1141.17 | USD | 20250812 |