RoamWiFi Technology (HK) Limited is one of the holding subsidiary of Ultrapower,it was established in September 2014.RoamWiFi Technology (HK) Limited is the extending business of Ultrapower in the field of wireless Internet,the company's business mission is to provide users with affordable portable Internet service,based on the Intelligent Product RoamWiFi and Mobile Apps of the same name ,to create a convenient Internet platform for out bound people.RoamWiFi  is a portable SIM-free Wi-Fi hotspot device which provide stable ,easy to use and secure portable internet access at anywhere around of the world.Contact information as below:bd@roamwifi.com