... specialized in design,development,production and sales of stepper motor and synchronous motor,with high quality at the competitive price.We have been ... , CCC, UL,CE, VDE. Our mainly product is synchronous motor, stepping motor, copper pipe and heat exchange for air-conditioner, mold. Our ... dB(A)Dielectric Strength1800 V/1s. 50TYZ421-W2 ac Synchronous Motor