| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 984.5 | USD | 20251009 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 984.5 | USD | 20251009 |
| Hualu Holdings Group Co., Ltd. | China national standards | MT | 1181.4 | USD | 20251009 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 970.44 | USD | 20251009 |
| China national standards | MT | 970.44 | USD | 20251009 | |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1082.95 | USD | 20251009 |
| Xinjiang Tianli Petrochemical Co., Ltd. | China national standards | MT | 1336.11 | USD | 20251009 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 956.37 | USD | 20251009 |
| China national standards | MT | 970.44 | USD | 20251009 | |
| Shandong Haili Chemical Industry Co., Ltd. | China national standards | MT | 1265.79 | USD | 20251009 |