| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 990.3 | USD | 20251211 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 989.36 | USD | 20251210 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 961.14 | USD | 20251205 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 960.53 | USD | 20251202 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 960.51 | USD | 20251126 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 959.44 | USD | 20251121 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 959.69 | USD | 20251118 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 960.11 | USD | 20251114 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 973.81 | USD | 20251110 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 973.68 | USD | 20251106 |