| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.94 | USD | 20251014 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 690.07 | USD | 20251013 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.67 | USD | 20251011 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.67 | USD | 20251010 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.15 | USD | 20251009 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.61 | USD | 20250930 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.28 | USD | 20250929 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 688.67 | USD | 20250928 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 688.67 | USD | 20250926 |
| Nantong Zhonghe Chemical New Material Co., Ltd. | China national standards | MT | 689.59 | USD | 20250925 |