| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.11 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 969.75 | USD | 20250928 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1068.14 | USD | 20250928 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1096.24 | USD | 20250928 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1096.24 | USD | 20250928 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 969.75 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250928 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 829.21 | USD | 20250927 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 829.21 | USD | 20250927 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 829.21 | USD | 20250927 |