| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.54 | USD | 20250531 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1210.89 | USD | 20250530 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1210.89 | USD | 20250530 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.54 | USD | 20250530 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.64 | USD | 20250529 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1209.9 | USD | 20250529 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1209.9 | USD | 20250529 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1210.11 | USD | 20250528 |
| Shandong Fushengyong Trading Co., Ltd. | China national standards | MT | 1210.11 | USD | 20250528 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.84 | USD | 20250528 |