| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1051.57 | USD | 20250818 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 981.46 | USD | 20250818 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 883.32 | USD | 20250818 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 876.31 | USD | 20250818 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 813.21 | USD | 20250818 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 784.63 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 812.65 | USD | 20250816 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.85 | USD | 20250815 |