| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.46 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.46 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.59 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1059.1 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 967.92 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.6 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.66 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.03 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.94 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.58 | USD | 20250818 |