| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1088.12 | USD | 20251208 |
| Guangzhou Tianyue Chemical Co., Ltd. | China national standards | MT | 1229.44 | USD | 20251208 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.55 | USD | 20251208 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.81 | USD | 20251208 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.48 | USD | 20251208 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 932.88 | USD | 20251207 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.67 | USD | 20251207 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 904.61 | USD | 20251207 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1272.1 | USD | 20251207 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.67 | USD | 20251207 |