| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1074.07 | USD | 20251201 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1088.2 | USD | 20251201 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1074.07 | USD | 20251201 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1088.2 | USD | 20251201 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1087.74 | USD | 20251130 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1087.89 | USD | 20251127 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1073.76 | USD | 20251127 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1073.76 | USD | 20251127 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1087.17 | USD | 20251125 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1086.85 | USD | 20251124 |