| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.58 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.6 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.8 | USD | 20250728 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.81 | USD | 20250728 |