| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.02 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.02 | USD | 20250827 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 393.77 | USD | 20250827 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1040.67 | USD | 20250827 |
| Shandong Qiancheng New Materials Co., Ltd. | 90% | MT | 393.77 | USD | 20250827 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.08 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 450.02 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.02 | USD | 20250827 |