| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 1026.64 | USD | 20250922 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1012.57 | USD | 20250922 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 949.29 | USD | 20250922 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 794.59 | USD | 20250922 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 815.68 | USD | 20250922 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |
| Weifang Shuoxin Chemical Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 928.19 | USD | 20250922 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 956.02 | USD | 20250921 |