| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1092.68 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1246.78 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1274.8 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1099.69 | USD | 20250820 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1050.66 | USD | 20250820 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1120.7 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 980.96 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1100.07 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1275.24 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1247.21 | USD | 20250819 |