| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.34 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.34 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.37 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.24 | USD | 20250825 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.86 | USD | 20250825 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250824 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.23 | USD | 20250823 |