| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250921 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250921 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 970.08 | USD | 20250920 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250920 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 927.9 | USD | 20250920 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 927.9 | USD | 20250920 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 970.08 | USD | 20250920 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250920 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 984.14 | USD | 20250920 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 913.85 | USD | 20250920 |