... human. 2,saving more than 80%. 3, saving manpower by 20%. 4, small size ...... The independent research and development of ... human.2,saving more than 80%.3, saving manpower by 20%.4, small size, simple operation, easy maintenance, beautiful ... 6714 Over-lock QuantityWorking hrs / dayClutch motor Power consumptionGrand DD motor Power consumptionworking day/monthElectricity rate (CNY)Daily saving(CNY ...