| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1112.75 | USD | 20251015 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1056.41 | USD | 20251015 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 1169.1 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1112.75 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1098.67 | USD | 20251015 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 943.73 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1105.71 | USD | 20251015 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 915.56 | USD | 20251015 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 929.64 | USD | 20251015 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 929.64 | USD | 20251015 |