| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.85 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.69 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.87 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.71 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.67 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.81 | USD | 20250902 |