| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 757.11 | USD | 20251024 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 757.11 | USD | 20251024 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 757.11 | USD | 20251024 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 803.63 | USD | 20251024 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 944.62 | USD | 20251024 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 803.63 | USD | 20251024 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1113.81 | USD | 20251024 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 757.11 | USD | 20251024 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 944.62 | USD | 20251024 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 845.93 | USD | 20251024 |