Hangzhou Ruidun Technology Co.,LTD was Estabished in 2013.We are one of the leading company that provide retailers with innovative security solutoins. With Our innovative product ,agile operateions,competitive prices,best service.We've been building large customers base in the worldwide.We have exported more than 80 countires. Our website: www.ruiduntechnology.com Our Advantage: Innovative Products Full production lines Quick and Best Service OEM and ODM for customers