| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.12 | USD | 20251117 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.06 | USD | 20251115 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.06 | USD | 20251115 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.06 | USD | 20251114 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.79 | USD | 20251113 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.0 | USD | 20251112 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.78 | USD | 20251111 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.78 | USD | 20251111 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.85 | USD | 20251110 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.98 | USD | 20251108 |