| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 733.77 | USD | 20251103 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1114.76 | USD | 20251103 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 729.54 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.38 | USD | 20251103 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 846.66 | USD | 20251103 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 846.66 | USD | 20251103 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1093.6 | USD | 20251103 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.32 | USD | 20251103 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1114.76 | USD | 20251103 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 729.54 | USD | 20251103 |