| Vendor | Spec | Unit | Price | Currency | Date | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.05 | USD | 20250828 | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.79 | USD | 20250828 | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.79 | USD | 20250828 | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.79 | USD | 20250828 | 
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.87 | USD | 20250828 | 
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.83 | USD | 20250828 | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.05 | USD | 20250827 | 
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1167.24 | USD | 20250827 | 
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.14 | USD | 20250827 | 
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1075.83 | USD | 20250827 |