| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Guanjiu Energy | Qualified/Standard Grade | MT | 2287.33 | USD | 20251114 |
| Shandong Guanjiu Energy | China national standards | MT | 2287.33 | USD | 20251114 |
| Shandong Guanjiu Energy | Qualified/Standard Grade | MT | 2324.99 | USD | 20251016 |
| Shandong Guanjiu Energy | China national standards | MT | 2324.99 | USD | 20251016 |
| Shandong Guanjiu Energy | Qualified/Standard Grade | MT | 2390.93 | USD | 20251009 |
| Shandong Guanjiu Energy | China national standards | MT | 2390.93 | USD | 20251009 |
| Shandong Guanjiu Energy | China national standards | MT | 2462.88 | USD | 20250930 |
| Shandong Guanjiu Energy | Qualified/Standard Grade | MT | 2462.88 | USD | 20250930 |