| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |
| Shanghai Lanyan Cosmetics Co., Ltd. | China national standards | MT | 1336.99 | USD | 20250930 |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 647.39 | USD | 20250930 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 907.75 | USD | 20250930 |
| Shandong Wells Chemicals Co., Ltd. | China national standards | MT | 816.27 | USD | 20250930 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |
| Shinghwa Advanced Material Group Co., Ltd. | China national standards | MT | 900.71 | USD | 20250930 |