| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 907.65 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 935.79 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.61 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 942.83 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.32 | USD | 20250828 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 844.32 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.18 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.18 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 815.66 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.66 | USD | 20250827 |