| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1125.89 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1041.45 | USD | 20250930 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1083.67 | USD | 20250930 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1196.26 | USD | 20250930 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1196.26 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 999.23 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1020.34 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1041.45 | USD | 20250930 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 999.23 | USD | 20250930 |