| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1055.02 | USD | 20250929 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1055.49 | USD | 20250925 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1054.76 | USD | 20250922 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1083.65 | USD | 20250915 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1083.56 | USD | 20250910 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1084.38 | USD | 20250909 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1048.53 | USD | 20250904 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1048.23 | USD | 20250901 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1047.7 | USD | 20250827 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1044.02 | USD | 20250819 |