| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.66 | USD | 20251010 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 805.09 | USD | 20251010 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.09 | USD | 20251010 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 971.17 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.17 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1126.0 | USD | 20251010 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1111.92 | USD | 20251010 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 844.5 | USD | 20251010 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 844.5 | USD | 20251010 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1097.85 | USD | 20251010 |