| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1115.91 | USD | 20251202 |
| Jinan Jinrihe Chem | China national standards | MT | 1002.91 | USD | 20251202 |
| Qingdao Shengze Chem | China national standards | MT | 875.78 | USD | 20251202 |
| Shandong Huize Chem | China national standards | MT | 960.53 | USD | 20251202 |
| Shandong Mingyu | China national standards | MT | 1052.35 | USD | 20251202 |
| Jinan Jinhao Chem | China national standards | MT | 1243.04 | USD | 20251202 |
| Shandong Qiangsen Chem | China national standards | MT | 932.28 | USD | 20251202 |
| Shandong Qiangsen Chem | China national standards | MT | 932.28 | USD | 20251202 |
| Beijing Yanshan Petro | China national standards | MT | 1172.42 | USD | 20251202 |
| Beijing Yanshan Petro | China national standards | MT | 918.16 | USD | 20251202 |