| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Mingbo Chemical Co., Ltd. | China national standards | MT | 773.25 | USD | 20250919 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 787.31 | USD | 20250919 |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 815.43 | USD | 20250919 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 787.31 | USD | 20250919 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 843.55 | USD | 20250919 |
| Hunan Jinyu Fine Chemical Co., Ltd. | China national standards | MT | 815.43 | USD | 20250919 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 949.57 | USD | 20250918 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 794.82 | USD | 20250918 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1012.87 | USD | 20250918 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 900.33 | USD | 20250918 |