| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.87 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.87 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.98 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.83 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.9 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.72 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.79 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.59 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.62 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.62 | USD | 20250922 |