| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.2 | USD | 20251120 |
| China Petroleum and Chemical Corporation Tianjin Branch | China national standards | MT | 846.2 | USD | 20251120 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 846.2 | USD | 20251120 |
| Shandong Dongming Petroche Mical Group Co., Ltd. | China national standards | MT | 1875.75 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.13 | USD | 20251120 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 930.82 | USD | 20251120 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 973.13 | USD | 20251120 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1128.27 | USD | 20251120 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1100.06 | USD | 20251120 |