| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.6 | USD | 20250912 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.43 | USD | 20250911 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.49 | USD | 20250908 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.09 | USD | 20250905 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.23 | USD | 20250904 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.11 | USD | 20250828 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 801.6 | USD | 20250827 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 800.7 | USD | 20250826 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 801.0 | USD | 20250825 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |