| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251002 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 886.64 | USD | 20251001 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Shandong Yuxuan Chemical Products Co., Ltd. | China national standards | MT | 999.23 | USD | 20250930 |
| China national standards | MT | 1013.3 | USD | 20250930 | |
| Guanjiuzhou (Shandong) Energy Technology Co., Ltd. | China national standards | MT | 1083.67 | USD | 20250930 |
| Guanjiuzhou (Shandong) Energy Technology Co., Ltd. | China national standards | MT | 1076.63 | USD | 20250930 |
| Wuhan Hengjiu Chemical Co., Ltd. | China national standards | MT | 886.64 | USD | 20250930 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |