| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1098.27 | USD | 20251014 |
| Qingdao Shengze Chem | China national standards | MT | 1097.74 | USD | 20250930 |
| Shandong Jiaen Chem | China national standards | MT | 1175.15 | USD | 20250930 |
| Shandong Hongyang Chem | China national standards | MT | 1279.78 | USD | 20250922 |
| Jinan Aochen Chem | China national standards | MT | 1196.24 | USD | 20250915 |
| Shandong Yihe Chem | China national standards | MT | 1098.07 | USD | 20250911 |
| Jinan Angxin Chem | China national standards | MT | 1196.69 | USD | 20250908 |
| Sinopec | China national standards | MT | 1139.42 | USD | 20250902 |
| Shandong Aite Chem | China national standards | MT | 1181.9 | USD | 20250901 |
| Qingdao Shengze Chem | China national standards | MT | 1096.11 | USD | 20250825 |