| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Liancheng Chemical Co., Ltd. | China national standards | MT | 1201.26 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | 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 |
| Jiangsu Haixing Chemical Co., Ltd. | China national standards | MT | 1271.92 | USD | 20251201 |
| Shandong Haili Chemical Industry Co., Ltd. | China national standards | MT | 1483.91 | USD | 20251201 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1356.72 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | USD | 20251201 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1271.92 | USD | 20251201 |