| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.34 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.03 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.03 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.81 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.69 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 404.9 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 449.89 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 449.89 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 404.9 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.69 | USD | 20250919 |