| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.81 | USD | 20250901 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 492.46 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.67 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 563.14 | USD | 20250830 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 492.75 | USD | 20250830 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 492.75 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 563.14 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.67 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.45 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.45 | USD | 20250828 |