| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1271.38 | USD | 20251128 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1271.38 | USD | 20251128 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 932.35 | USD | 20251128 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1130.12 | USD | 20251128 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 918.22 | USD | 20251128 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 932.48 | USD | 20251127 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 890.09 | USD | 20251127 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 890.09 | USD | 20251127 |
| China national standards | MT | 1031.38 | USD | 20251127 | |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 932.48 | USD | 20251127 |