| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 599.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.45 | USD | 20250922 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 541.45 | USD | 20250922 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 632.86 | USD | 20250922 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 492.22 | USD | 20250922 |
| Satellite Chemical Co., Ltd. | China national standards | MT | 601.92 | USD | 20250922 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 534.41 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.45 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.45 | USD | 20250922 |