| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Haili Chemical Industry Co., Ltd. | China national standards | MT | 1195.03 | USD | 20250919 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250919 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1040.38 | USD | 20250919 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1040.38 | USD | 20250919 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |