| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.81 | USD | 20251110 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 804.45 | USD | 20251110 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1100.82 | USD | 20251110 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1100.82 | USD | 20251110 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 1072.6 | USD | 20251110 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1129.05 | USD | 20251110 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 973.81 | USD | 20251110 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 729.85 | USD | 20251109 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 729.85 | USD | 20251109 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.09 | USD | 20251109 |