| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1129.54 | USD | 20251114 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1073.07 | USD | 20251114 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1101.31 | USD | 20251114 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1101.31 | USD | 20251114 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 931.87 | USD | 20251114 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.87 | USD | 20251114 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1284.86 | USD | 20251114 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1094.25 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1066.01 | USD | 20251114 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1072.46 | USD | 20251113 |