| Vendor | Spec | Unit | Price | Currency | Date |
| Shaanxi Yanchang Petroleum (Group) Co., Ltd. | China national standards | MT | 956.6 | USD | 20250918 |
| Sinopec Northeast Natural Gas Sales Co., Ltd. | China national standards | MT | 956.6 | USD | 20250918 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.19 | USD | 20250918 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.19 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1329.39 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1294.23 | USD | 20250918 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1195.75 | USD | 20250918 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1223.89 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.67 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.67 | USD | 20250918 |