| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 805.69 | USD | 20251015 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 805.55 | USD | 20251013 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 809.31 | USD | 20251011 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 815.73 | USD | 20251009 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 826.12 | USD | 20250930 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 825.73 | USD | 20250929 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 837.64 | USD | 20250928 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 844.39 | USD | 20250924 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 847.21 | USD | 20250923 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 848.03 | USD | 20250922 |