| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.21 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.43 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.95 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.54 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 885.98 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 884.98 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 885.32 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 883.33 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 883.33 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 883.75 | USD | 20250821 |