| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.13 | USD | 20251120 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1128.27 | USD | 20251120 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1071.86 | USD | 20251120 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 973.13 | USD | 20251120 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 1100.58 | USD | 20251119 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 1072.36 | USD | 20251119 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 1072.36 | USD | 20251119 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 874.82 | USD | 20251119 |