| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1071.86 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1092.88 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1092.88 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1093.4 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1093.4 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1072.37 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1247.6 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1275.64 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.41 | USD | 20250814 |