| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 733.88 | USD | 20251118 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 750.82 | USD | 20251118 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 973.81 | USD | 20251118 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1100.82 | USD | 20251118 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1072.6 | USD | 20251118 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 931.47 | USD | 20251118 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 804.9 | USD | 20251117 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.3 | USD | 20251117 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.3 | USD | 20251117 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 847.27 | USD | 20251117 |