| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 729.4 | USD | 20251101 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 846.5 | USD | 20251101 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 804.18 | USD | 20251101 |
| Shandong Dongming Petroche Mical Group Co., Ltd. | China national standards | MT | 1876.41 | USD | 20251101 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 846.5 | USD | 20251101 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 729.4 | USD | 20251101 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1114.56 | USD | 20251031 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 729.4 | USD | 20251031 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 729.4 | USD | 20251031 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 729.4 | USD | 20251031 |