| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.48 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1077.01 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1098.13 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1098.13 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.99 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1281.15 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1105.17 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1280.55 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.65 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.62 | USD | 20250828 |