| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.81 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 448.68 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.95 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 630.95 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.68 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 448.68 | USD | 20250823 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 462.7 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 448.68 | USD | 20250823 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 462.7 | USD | 20250822 |