| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.05 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.06 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.06 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.13 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.13 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.12 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.26 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.24 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.25 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.24 | USD | 20250808 |