| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 956.6 | USD | 20250918 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1083.21 | USD | 20250918 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1083.21 | USD | 20250918 |