| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 986.62 | USD | 20251018 |
| Shandong Yuxuan Chemical Products Co., Ltd. | China national standards | MT | 986.62 | USD | 20251018 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1000.72 | USD | 20251018 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 986.62 | USD | 20251018 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1000.72 | USD | 20251018 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1000.72 | USD | 20251018 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1000.72 | USD | 20251018 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 986.62 | USD | 20251018 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 873.87 | USD | 20251018 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 887.96 | USD | 20251018 |