| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2197.34 | USD | 20251015 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2196.53 | USD | 20251014 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2196.97 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2195.7 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2195.7 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2194.03 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2195.48 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 2195.42 | USD | 20250925 |