| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.95 | USD | 20250908 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1091.1 | USD | 20250908 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1013.67 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 844.31 | USD | 20250907 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 1097.6 | USD | 20250906 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.57 | USD | 20250906 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1097.6 | USD | 20250906 |