| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1009.52 | USD | 20250824 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250822 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1009.52 | USD | 20250822 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1010.0 | USD | 20250821 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1038.06 | USD | 20250821 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1008.63 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1036.65 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1008.98 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1037.01 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1009.51 | USD | 20250818 |