特點：制有印刷的背心袋、平口袋；主電(dian)(dian)機(ji)采用(yong)(yong)變頻(pin)電(dian)(dian)機(ji)，使您更省電(dian)(dian)，調速更自如。良好性能的色標(biao)跟(gen)蹤儀，使封切長度(du)更準確、誤差(cha)更小(xiao)。采用(yong)(yong)先進的電(dian)(dian)腦，長度(du)調整方便，精確。