| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | Industrial Grade | MT | 847.06 | USD | 20251112 |
| Shandong Langchem | China national standards | MT | 847.06 | USD | 20251112 |
| Shandong Langchem | Industrial Grade | MT | 910.59 | USD | 20251112 |
| Shandong Wells Chem | China national standards | MT | 861.18 | USD | 20251112 |
| Shandong Wells Chem | China national standards | MT | 910.59 | USD | 20251112 |
| Jinan Jinrihe Chem | China national standards | MT | 790.59 | USD | 20251112 |
| Shandong Yushuo Chem | China national standards | MT | 861.18 | USD | 20251112 |
| Shandong Jinwen Chem | China national standards | MT | 847.06 | USD | 20251112 |
| Nanjing Runsheng Petro | China national standards | MT | 1552.95 | USD | 20251112 |
| Shandong Yushuo Chem | China national standards | MT | 861.18 | USD | 20251112 |