| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.35 | USD | 20251127 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1059.64 | USD | 20251127 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1059.38 | USD | 20251126 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 918.13 | USD | 20251126 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 917.11 | USD | 20251121 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1058.2 | USD | 20251121 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1057.75 | USD | 20251120 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 916.72 | USD | 20251120 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 917.15 | USD | 20251119 |
| Shandong Zhongke Taihua New Material Co., Ltd. | China national standards | MT | 1058.25 | USD | 20251119 |