| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.35 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.69 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.63 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.63 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.69 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.24 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.13 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.26 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.29 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.85 | USD | 20250805 |