| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1208.07 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1194.47 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.4 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1208.53 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1208.53 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1169.18 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1191.79 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.76 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.82 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.82 | USD | 20250823 |