| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1447.42 | USD | 20250825 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1444.17 | USD | 20250823 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1444.17 | USD | 20250822 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1444.86 | USD | 20250821 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1444.86 | USD | 20250821 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1442.9 | USD | 20250820 |