| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 907.73 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.7 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 935.88 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.98 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 943.56 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 936.51 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 908.35 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.31 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.04 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 943.28 | USD | 20250908 |