| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 997.86 | USD | 20250927 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 969.75 | USD | 20250927 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 941.65 | USD | 20250927 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 969.75 | USD | 20250927 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 913.54 | USD | 20250926 |
| Beijing Xinqianrong Petrochemical Co., Ltd. | China national standards | MT | 913.54 | USD | 20250926 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 1194.63 | USD | 20250926 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 983.81 | USD | 20250926 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 927.59 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1110.3 | USD | 20250926 |