| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.88 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.88 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.73 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.8 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.71 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.67 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.81 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.71 | USD | 20250929 |