| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1187.13 | USD | 20251201 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1059.94 | USD | 20251201 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1130.6 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | USD | 20251201 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 918.61 | USD | 20251201 |
| Jiangsu Yangnong Chemical Co., Ltd. | China national standards | MT | 855.01 | USD | 20251201 |
| Weifang Yixin Chemical Co., Ltd. | China national standards | MT | 1646.43 | USD | 20251201 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.8 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.82 | USD | 20251201 |