| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1061.03 | USD | 20251211 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 919.56 | USD | 20251211 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.69 | USD | 20251210 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.55 | USD | 20251208 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1059.86 | USD | 20251208 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.74 | USD | 20251205 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1060.09 | USD | 20251205 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.95 | USD | 20251204 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1060.33 | USD | 20251204 |