| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.93 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.03 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.44 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.66 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.74 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.57 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.51 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.29 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.37 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.59 | USD | 20251013 |