| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.42 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.34 | USD | 20250825 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250824 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.54 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 378.57 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.53 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.54 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.54 | USD | 20250823 |