| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.48 | USD | 20250820 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 756.47 | USD | 20250820 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 784.49 | USD | 20250820 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 784.76 | USD | 20250819 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.75 | USD | 20250819 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 771.15 | USD | 20250818 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 785.17 | USD | 20250818 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.62 | USD | 20250815 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 784.63 | USD | 20250815 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.99 | USD | 20250814 |