| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.65 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.59 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.36 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.24 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.47 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.52 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.27 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.05 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.14 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.13 | USD | 20250902 |