| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 802.74 | USD | 20251013 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.09 | USD | 20251012 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 805.09 | USD | 20251012 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1126.0 | USD | 20251011 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 971.17 | USD | 20251011 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1097.85 | USD | 20251011 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1097.85 | USD | 20251011 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1280.82 | USD | 20251011 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1069.7 | USD | 20251011 |
| Shandong Dongming Petroche Mical Group Co., Ltd. | China national standards | MT | 1871.97 | USD | 20251011 |