We'd like to testify that Herofun have served us from 2012 till now, and we have successfully deliveried WIFI/3G/4G tablet and fingerprint device with qty: 2012-90K, 2013-165K, 2014-160K, 2015-395K,2017 till Dec 196K We are highly appreciated from support from Herofun: Technical support and good quality control, timely delivery and design support