| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.98 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.73 | USD | 20250915 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 323.69 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.36 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.11 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.11 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.11 | USD | 20250909 |