| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 625.81 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 625.11 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 505.7 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 505.9 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 625.34 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 623.94 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 504.76 | USD | 20250823 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 504.76 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 623.94 | USD | 20250822 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 505.0 | USD | 20250821 |