| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.48 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.48 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.25 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.25 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.88 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.88 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.61 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.79 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250829 |