| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.95 | USD | 20250821 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 490.97 | USD | 20250821 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.35 | USD | 20250820 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 490.31 | USD | 20250820 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.3 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.55 | USD | 20250819 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 490.48 | USD | 20250819 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.46 | USD | 20250819 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.71 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.84 | USD | 20250818 |