The second variable of supply chain management performance is velocity-or the speed of the supply chain .It is governed by the speed of access to good data,planning cycles and execution cycles.

• 供应链管理成效的第二个可变因素是供应链的加速度；或其速度.；它是由获得货品数据；计划周期及执行周期这三方面的速度所管辖着的