| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinrihe Chem | China national standards | MT | 1693.12 | USD | 20251122 |
| Qingdao Shengze Chem | China national standards | MT | 1594.36 | USD | 20251122 |
| Qingdao Shengze Chem | China national standards | MT | 1594.36 | USD | 20251122 |
| Shandong Hongyang Chem | China national standards | MT | 1128.75 | USD | 20251121 |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251121 |
| Shandong Junfeng | China national standards | MT | 917.11 | USD | 20251121 |
| Shandong Junfeng | China national standards | MT | 924.16 | USD | 20251121 |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1173.9 | USD | 20251121 |
| Dongying Lianchem | China national standards | MT | 1199.29 | USD | 20251121 |