| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.51 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.6 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.83 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.73 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |