| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1084.52 | USD | 20250722 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.57 | USD | 20250721 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1083.58 | USD | 20250721 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1083.95 | USD | 20250718 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.94 | USD | 20250718 |