| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1512.18 | USD | 20251201 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 1568.71 | USD | 20251201 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 1568.71 | USD | 20251201 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 1582.17 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1596.29 | USD | 20251130 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 1695.18 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1539.79 | USD | 20251130 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1624.55 | USD | 20251130 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.25 | USD | 20251129 |
| Dongying Liancheng Chemical Co., Ltd. | China national standards | MT | 1200.75 | USD | 20251129 |