| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.87 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.98 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.87 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.07 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.11 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.95 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.16 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.24 | USD | 20250909 |