| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.41 | USD | 20251209 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.47 | USD | 20251208 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.57 | USD | 20251206 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.57 | USD | 20251205 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.57 | USD | 20251205 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.68 | USD | 20251204 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.54 | USD | 20251203 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.27 | USD | 20251202 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.5 | USD | 20251201 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 480.3 | USD | 20251128 |