... , more convenient for user to operate.3) Transducer achieves soft start, automatic transmission.4) Synchronous belt drive gets higher speed, decreases noise ... .but usually,we have 120mm,135mm,150mm2).Feed: 2 route,4 route,6 route3).Output is determined by the feed route ... : 4).Needles: It is determined by sample5).Voltage: 380V,0.55KW6). ...