| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1096.61 | USD | 20250919 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 843.55 | USD | 20250919 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 829.49 | USD | 20250919 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1068.5 | USD | 20250919 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 801.37 | USD | 20250919 |
| Jinan Jiaxing Chemical Co., Ltd. | China national standards | MT | 815.43 | USD | 20250919 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 801.37 | USD | 20250919 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1089.58 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.47 | USD | 20250919 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 829.49 | USD | 20250919 |