JK-T1903 Compuer-controlled High speed Button Mounting industrial Sewing Machine TECHNIC PARAMETER SHEET JK-T1903 It is applicable for botton holes with light、middle and weight material DP*17 14# 1 1 10*28 X:3.4 Y:3.4 o <13 o 370W 1400rpm 220/380 o 400-2500 790*360*550 45 JK-T1903B It is applicable for botton holes with light、middle and weight material DP*17 14# 1 1 10*28 X:3.4 Y:3.4 o <13 o 370W 1400rpm 220/380 o 400-2500 790*360*550 45