| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.79 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.93 | USD | 20251017 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.65 | USD | 20251015 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.49 | USD | 20251014 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.58 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.32 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.32 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.99 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.28 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.69 | USD | 20250928 |