| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.37 | USD | 20251127 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.25 | USD | 20251126 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.05 | USD | 20251125 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.05 | USD | 20251125 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.91 | USD | 20251124 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.72 | USD | 20251121 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.51 | USD | 20251120 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.74 | USD | 20251119 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.85 | USD | 20251118 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.12 | USD | 20251117 |