| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.96 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.84 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.94 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.87 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.69 | USD | 20250828 |