| Vendor | Spec | Unit | Price | Currency | Date |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 1054.76 | USD | 20250922 |
| Qingdao Chengxin Hongfeng Chemical Co., Ltd. | China national standards | MT | 801.62 | USD | 20250922 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 956.32 | USD | 20250922 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 773.49 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.68 | USD | 20250922 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 956.32 | USD | 20250922 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1054.76 | USD | 20250922 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1054.76 | USD | 20250922 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 829.75 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 815.68 | USD | 20250922 |