Please contact us directly if you're interested. WhatsApp: +86 15006114948 Email:info@ht-motor.com When it comes to quality aspect, Hetai was qualified by ISO Certificate, CE and Rohs. The product quality has also been recognized by many customers. Welcome to visit our official website : http://www.hetaimotor.com. Integrated Stepper Motor:http://www.hetaimotor.com/supplier-438459-integrated-stepper-motor