| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1083.75 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.78 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 964.89 | USD | 20250729 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.74 | USD | 20250729 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1090.74 | USD | 20250729 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 1090.74 | USD | 20250729 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1006.84 | USD | 20250729 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1091.41 | USD | 20250728 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1007.46 | USD | 20250728 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 1091.41 | USD | 20250728 |