| Vendor | Spec | Unit | Price | Currency | Date |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 942.93 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| SINOPEC Maoming Petrochemical Co., Ltd. | China national standards | MT | 1125.89 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1294.77 | USD | 20250930 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 1154.04 | USD | 20250930 |
| Sinopec Northeast Natural Gas Sales Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1329.96 | USD | 20250930 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.73 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |