| Vendor | Spec | Unit | Price | Currency | Date |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2221.98 | USD | 20250506 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2221.79 | USD | 20250430 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2220.9 | USD | 20250428 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2220.19 | USD | 20250427 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2220.19 | USD | 20250425 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2219.2 | USD | 20250424 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2218.65 | USD | 20250423 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2219.94 | USD | 20250422 |