| Vendor | Spec | Unit | Price | Currency | Date |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 236.01 | USD | 20251201 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 235.95 | USD | 20251127 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 235.95 | USD | 20251127 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 237.2 | USD | 20251125 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 235.79 | USD | 20251125 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 235.79 | USD | 20251125 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 239.86 | USD | 20251121 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 242.68 | USD | 20251121 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 242.68 | USD | 20251121 |
| Zhongyin New Materials (Jinan) Co., Ltd. | China national standards | MT | 239.92 | USD | 20251118 |