| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 741.96 | USD | 20251201 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 699.26 | USD | 20251130 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 699.26 | USD | 20251128 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 734.58 | USD | 20251128 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 699.36 | USD | 20251127 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 734.68 | USD | 20251127 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 720.38 | USD | 20251126 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 699.19 | USD | 20251126 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 720.07 | USD | 20251125 |
| Shandong Wonfull Petrochemical Group Co., Ltd. | China national standards | MT | 698.9 | USD | 20251125 |