| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.07 | USD | 20250723 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.08 | USD | 20250723 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.08 | USD | 20250723 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.83 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.83 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.84 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.85 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.52 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.54 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.5 | USD | 20250721 |