| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.64 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.65 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.68 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.67 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.94 | USD | 20250730 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.94 | USD | 20250730 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.93 | USD | 20250730 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.93 | USD | 20250730 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.55 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.56 | USD | 20250729 |