| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1356.72 | USD | 20251201 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.73 | USD | 20251201 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.37 | USD | 20251201 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1271.92 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1187.13 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1596.29 | USD | 20251130 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1624.55 | USD | 20251130 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 1695.18 | USD | 20251130 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 1582.17 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1539.79 | USD | 20251130 |