| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1083.67 | USD | 20251002 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1097.74 | USD | 20251001 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1083.67 | USD | 20251001 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1083.67 | USD | 20250930 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 956.55 | USD | 20250929 |
| Beijing Wentong Tianxia Cultural Technology Co., Ltd. | China national standards | MT | 1097.22 | USD | 20250929 |