| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.23 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.18 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.21 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.28 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.21 | USD | 20250826 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.18 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.76 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.34 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.42 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |