| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.53 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.22 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.46 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.62 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.08 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.31 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.46 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.05 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.82 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.16 | USD | 20251024 |