| Vendor | Spec | Unit | Price | Currency | Date |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1280.7 | USD | 20251008 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 830.34 | USD | 20251008 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251008 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251008 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1111.81 | USD | 20251008 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 802.2 | USD | 20251008 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 802.2 | USD | 20251007 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251007 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251007 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1280.7 | USD | 20251006 |