| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1240.19 | USD | 20250327 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1226.41 | USD | 20250320 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1282.16 | USD | 20250320 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1338.15 | USD | 20250311 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1282.39 | USD | 20250311 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1352.76 | USD | 20250307 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1283.03 | USD | 20250307 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1352.12 | USD | 20250304 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1282.43 | USD | 20250304 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1324.23 | USD | 20250227 |