| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 917.29 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 917.64 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 899.37 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.35 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 915.58 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.35 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.78 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.56 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.87 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.34 | USD | 20250818 |