| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.66 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.4 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.36 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.14 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.14 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.36 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.4 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.06 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.05 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.83 | USD | 20251009 |