| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.24 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.95 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.0 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.07 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.03 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.21 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.22 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.01 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.95 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.75 | USD | 20251105 |