| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.54 | USD | 20250915 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1097.73 | USD | 20250915 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.69 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.33 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.33 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.33 | USD | 20250915 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1097.73 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.33 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.76 | USD | 20250914 |