Hongkong koon technology ltd

we are a Chinese company that specializes in making special industrial telephone: Solar phone , Waterproof telephone, Weather resistance telephone , Loud speaker weatherproof telephone, Bank telephone, Tunnel emergency telephone, Elevator telephone, Prison telephone, Phone Accessories , etc. Applicable for Boat, Subway, Railway, Highway call box, Tunnel, Power plant, Petrochemicals factory, Mining, Dockside, iron & steel factory.