| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 801.0 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 969.63 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1060.97 | USD | 20250825 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1089.08 | USD | 20250825 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1096.11 | USD | 20250825 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1096.11 | USD | 20250825 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1011.79 | USD | 20250825 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 1096.11 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.46 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250823 |