| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.4 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.4 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.89 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.23 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1450.09 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1450.09 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.42 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.42 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.5 | USD | 20250827 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1446.87 | USD | 20250826 |