| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.45 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.33 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.22 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.34 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.34 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.22 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.74 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.85 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.24 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.12 | USD | 20251112 |