| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1131.77 | USD | 20251211 |
| Shandong Langchem | China national standards | MT | 1131.77 | USD | 20251211 |
| Shandong Qiangsen Chem | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Qiangsen Chem | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Qiangsen Chem | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Qiangsen Chem | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Xima | China national standards | MT | 891.27 | USD | 20251211 |
| Lihuayi Weiyuan Chem | China national standards | MT | 891.27 | USD | 20251211 |
| Lihuayi Weiyuan Chem | China national standards | MT | 848.82 | USD | 20251211 |
| Beijing Yanshan Petro | China national standards | MT | 848.82 | USD | 20251211 |