| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 350.52 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 350.52 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 462.69 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.67 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 350.52 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 448.67 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.8 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 399.6 | USD | 20250818 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.94 | USD | 20250818 |