| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.96 | USD | 20250801 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.1 | USD | 20250801 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.1 | USD | 20250801 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.99 | USD | 20250731 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.12 | USD | 20250731 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.12 | USD | 20250731 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.81 | USD | 20250730 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.83 | USD | 20250730 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 958.83 | USD | 20250730 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.73 | USD | 20250729 |