| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 626.2 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250828 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.77 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.43 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.43 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.27 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 506.27 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 625.81 | USD | 20250827 |