| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250925 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250924 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250923 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 1026.64 | USD | 20250922 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 1026.32 | USD | 20250919 |