one of the three biggest motor manufacturers Certificate:CCC,CE, VDE, ISO Our Customer: Kohler USA,Olimpia Splendid,etc We ... have been certificated by the ISO90001:2000, CCC,UL,CE,VDE.Our mainly product is stepper motor, synchronous motor, copper ... etc. Model20BYJ46-S1Phase4Rated Voltage12 DC.VResistance Per Phase300 Ω/PhaseStep Angle7.5 /85Reduction Ratio1/85Pull-in Torque34.3-49 mN.mDetent Torque ...