二手车买卖系统

为车商、4S店提供保证金余额、交易次数、成交率等数据看板，支持业务决策（如调整竞价保证金规则、优化车辆检测流程）。平台端统计全量交易数据，生成区域车型热度、价格趋势等分析报告。 并且数据可区分置换车与自有二手车的保证金规则（置换车不允许杠杆，自有二手车支持杠杆），自动计算冻结额度（如基础车辆保证金100元，杠杆后可使用保证金=基础保证金×杠杆倍数）。实时监控保证金状态，平台端消息提醒页自动推送冻结失败记录，支持批量冻结操作。

Provides data dashboards covering margin balance, transaction count, transaction success rate and other metrics for car dealers and 4S shops, to support business decision-making such as adjusting bidding margin rules and optimizing vehicle inspection processes. The platform aggregates full-volume transaction data and generates analysis reports including regional vehicle popularity and price trends. Moreover, the data differentiates margin rules for trade-in vehicles and owned used vehicles: trade-in vehicles do not allow leverage, while owned used vehicles support leverage, and automatically calculates the frozen quota. For example, if the basic vehicle margin is 100 yuan, the available margin after leverage equals basic margin multiplied by the leverage multiple. It monitors margin status in real time, automatically pushes freeze failure records to the platform's message reminder page, and supports batch freeze operations.